{"id":74,"date":"2023-09-16T13:00:39","date_gmt":"2023-09-16T13:00:39","guid":{"rendered":"https:\/\/mathority.org\/pt\/formulas-de-geometria-analitica-no-espaco\/"},"modified":"2023-09-16T13:00:39","modified_gmt":"2023-09-16T13:00:39","slug":"formulas-de-geometria-analitica-no-espaco","status":"publish","type":"post","link":"https:\/\/mathority.org\/pt\/formulas-de-geometria-analitica-no-espaco\/","title":{"rendered":"Geometria anal\u00edtica no espa\u00e7o (f\u00f3rmulas)"},"content":{"rendered":"<p>Nesta p\u00e1gina voc\u00ea encontrar\u00e1 a explica\u00e7\u00e3o de tudo sobre geometria anal\u00edtica no espa\u00e7o (e as f\u00f3rmulas): as equa\u00e7\u00f5es da reta e do plano, as posi\u00e7\u00f5es relativas entre planos e retas, como dist\u00e2ncias e \u00e2ngulos s\u00e3o calculados no espa\u00e7o,\u2026 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%c2%bfque-es-la-geometria-en-el-espacio\"><\/span> O que \u00e9 geometria no espa\u00e7o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> <strong>A geometria espacial<\/strong> \u00e9 o ramo da geometria respons\u00e1vel pelo estudo das figuras geom\u00e9tricas tridimensionais (3D), ou seja, aquelas que ocupam um lugar no espa\u00e7o. Como o cone, o cubo, a pir\u00e2mide, a esfera, o cilindro, os prismas, os poliedros, etc.<\/p>\n<p> No entanto, nesta p\u00e1gina vamos nos concentrar na <strong>geometria anal\u00edtica no espa\u00e7o<\/strong> , a parte da geometria espacial que se concentra na an\u00e1lise de pontos, linhas, planos, nas dist\u00e2ncias entre duas figuras geom\u00e9tricas, no \u00e2ngulo que elas formam, nos pontos de intersec\u00e7\u00e3o entre diferentes geometrias. figuras. elementos, etc <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuaciones-de-la-recta-en-el-espacio\"><\/span> Equa\u00e7\u00f5es da reta no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Lembre-se de que a defini\u00e7\u00e3o matem\u00e1tica de uma reta \u00e9 um conjunto de pontos consecutivos representados na mesma dire\u00e7\u00e3o, sem curvas ou \u00e2ngulos.<\/p>\n<p> Assim, para expressar matematicamente qualquer reta em um espa\u00e7o tridimensional (em R3) utilizamos as equa\u00e7\u00f5es da reta, e para encontr\u00e1-las precisamos apenas de um ponto que perten\u00e7a \u00e0 reta e ao vetor diretor dessa reta. <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/equations-de-la-droite-1.webp\" alt=\"equa\u00e7\u00f5es de retas pdf\" width=\"287\" height=\"273\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Com apenas esses dois elementos geom\u00e9tricos, voc\u00ea pode encontrar absolutamente todas as diferentes equa\u00e7\u00f5es da reta, que s\u00e3o as seguintes:<\/p>\n<p> As equa\u00e7\u00f5es da reta s\u00e3o a <strong>equa\u00e7\u00e3o vetorial<\/strong> , as <strong>equa\u00e7\u00f5es param\u00e9tricas<\/strong> , a <strong>equa\u00e7\u00e3o cont\u00ednua<\/strong> e a <strong>equa\u00e7\u00e3o impl\u00edcita (ou geral)<\/strong> .<\/p>\n<p> Abaixo voc\u00ea tem uma explica\u00e7\u00e3o dos diferentes tipos de equa\u00e7\u00f5es da reta. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuacion-vectorial-de-la-recta-en-el-espacio\"><\/span> Equa\u00e7\u00e3o vetorial da linha no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Sim<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-391ac2e3ba0b7f327ba5a0edc1ba162d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{v}}\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"9\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 o vetor de dire\u00e7\u00e3o da linha e<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-650eb7688af6737ac325425b5c9a5982_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"14\" style=\"vertical-align: 0px;\"><\/p>\n<p> um ponto que pertence \u00e0 direita:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c953822ce25652ca448e94a788a57727_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{v}}= (\\text{v}_x,\\text{v}_y,\\text{v}_z) \\qquad P(P_x,P_y,P_z)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"251\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p> A <strong>f\u00f3rmula para a equa\u00e7\u00e3o vetorial da reta<\/strong> \u00e9: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-acaf0a8e7defa1334cde7e01a2e65f4f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      (x,y,z)=(P_x,P_y,P_z)+t\\cdot (\\text{v}_x,\\text{v}_y,\\text{v}_z) \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuaciones-parametricas-de-la-recta-en-el-espacio\"><\/span> Equa\u00e7\u00f5es param\u00e9tricas da reta no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Podemos obter a <strong>f\u00f3rmula para a equa\u00e7\u00e3o param\u00e9trica<\/strong> de uma reta a partir de sua equa\u00e7\u00e3o vetorial igualando componente a componente: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a892d067e1fbbb24d966cf0443eb995e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle \\begin{cases} x=P_x+t\\cdot\\text{v}_x \\\\[1.7ex] y=P_y+t\\cdot\\text{v}_y \\\\[1.7ex] z=P_z+t\\cdot\\text{v}_z\\end{cases} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"313\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuacion-continua-de-la-recta-en-el-espacio\"><\/span> Equa\u00e7\u00e3o cont\u00ednua da reta no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> A f\u00f3rmula para a <strong>equa\u00e7\u00e3o cont\u00ednua da reta<\/strong> \u00e9:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-813bcf24a017b36ee987fcc70fb5adf1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\cfrac{x-P_x}{\\text{v}_x}=\\cfrac{y-P_y}{\\text{v}_y}= \\cfrac{z-P_z}{\\text{v}_z} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Este tipo de equa\u00e7\u00e3o da reta tamb\u00e9m pode ser obtida a partir de equa\u00e7\u00f5es param\u00e9tricas, voc\u00ea pode ver a demonstra\u00e7\u00e3o em nossa p\u00e1gina da <a href=\"https:\/\/mathority.org\/pt\/formula-equacao-continua-de-uma-reta\/\">equa\u00e7\u00e3o cont\u00ednua<\/a> , al\u00e9m disso, voc\u00ea tamb\u00e9m poder\u00e1 ver exemplos e praticar com exerc\u00edcios resolvidos de equa\u00e7\u00f5es da direita. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuaciones-general-o-implicita-de-la-recta-en-el-espacio\"><\/span> Equa\u00e7\u00f5es gerais (ou impl\u00edcitas) da reta no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Por fim, multiplicando as fra\u00e7\u00f5es da equa\u00e7\u00e3o cont\u00ednua da reta duas por duas, obtemos as <strong>equa\u00e7\u00f5es gerais (ou impl\u00edcitas) da reta<\/strong> :<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1507f641dfa92df09983b3950ee23c80_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle \\begin{cases} A_1x+B_1y+C_1z+D_1=0 \\\\[1.7ex] A_2x+B_2y+C_2z+D_2=0\\end{cases} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"313\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> Este tipo de equa\u00e7\u00e3o da reta tamb\u00e9m \u00e9 chamada de equa\u00e7\u00e3o cartesiana.<\/p>\n<p> Acabamos de ver as 4 equa\u00e7\u00f5es mais relevantes da reta (vetorial, param\u00e9trica, cont\u00ednua e geral), por\u00e9m, existe outra equa\u00e7\u00e3o um tanto particular e, portanto, \u00e9 necess\u00e1ria uma p\u00e1gina inteira para explic\u00e1-la. Esta \u00e9 a <a href=\"https:\/\/mathority.org\/pt\/equacao-canonica-segmentar-ou-simetrica-de-uma-formula-de-linha-exemplos-resolvidos-exercicios\/\">equa\u00e7\u00e3o can\u00f4nica<\/a> , neste link voc\u00ea pode ver toda a sua explica\u00e7\u00e3o, porque \u00e9 t\u00e3o especial e o que a diferencia de todas as outras. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuaciones-del-plano-en-el-espacio\"><\/span> Equa\u00e7\u00f5es planas no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Na geometria anal\u00edtica, a <strong>equa\u00e7\u00e3o de um plano<\/strong> \u00e9 uma equa\u00e7\u00e3o que permite que qualquer plano seja expresso analiticamente. Assim, para encontrar a equa\u00e7\u00e3o de um plano, basta um ponto e dois vetores linearmente independentes pertencentes a esse plano. <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/equations-planes.webp\" alt=\"equa\u00e7\u00e3o do plano xy on-line\" class=\"wp-image-2443\" width=\"404\" height=\"142\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Assim, todos os tipos de equa\u00e7\u00f5es do plano s\u00e3o: a <strong>equa\u00e7\u00e3o vetorial<\/strong> , as <strong>equa\u00e7\u00f5es param\u00e9tricas<\/strong> , a <strong>equa\u00e7\u00e3o impl\u00edcita (ou geral)<\/strong> e a <strong>equa\u00e7\u00e3o can\u00f4nica (ou segmental)<\/strong> do plano.<\/p>\n<p> A seguir veremos a explica\u00e7\u00e3o e f\u00f3rmula de todas as equa\u00e7\u00f5es do plano. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuacion-vectorial-del-plano\"><\/span> Equa\u00e7\u00e3o vetorial do plano<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Dado um ponto e dois vetores de dire\u00e7\u00e3o de um plano:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-cf5d4130501bb01b15aa80f8f80caf1a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{c} P(P_x,P_y,P_z) \\\\[2ex] \\vv{\\text{u}}=(\\text{u}_x,\\text{u}_y,\\text{u}_z)\\\\[2ex] \\vv{\\text{v}}=(\\text{v}_x,\\text{v}_y,\\text{v}_z)\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"95\" width=\"116\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> A <strong>f\u00f3rmula para a equa\u00e7\u00e3o vetorial de um plano<\/strong> \u00e9:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d9227901692832cb0c176a896d35e896_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      (x,y,z)=P+\\lambda \\vv{\\text{u}} + \\mu \\vv{\\text{v}} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Ou equivalente:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-78b41d21b63c22ec05d3f93576a897e0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(x,y,z)=(P_x,P_y,P_z)+\\lambda (\\text{u}_x,\\text{u}_y,\\text{u}_z) + \\mu (\\text{v}_x,\\text{v}_y,\\text{v}_z)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"398\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p> Ouro<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2b5c45836864531b8e37025dabadd24a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\lambda\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> E<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-461fe1a58a75801541487ddf10d32abd_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\mu\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"11\" style=\"vertical-align: -4px;\"><\/p>\n<p> S\u00e3o dois escalares, ou seja, dois n\u00fameros reais. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuaciones-parametricas-del-plano\"><\/span> Equa\u00e7\u00f5es param\u00e9tricas do plano<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Por outro lado, a f\u00f3rmula para a <strong>equa\u00e7\u00e3o param\u00e9trica do plano<\/strong> \u00e9: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-e1791802331aa9973126b3d7c7f1b716_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle \\begin{cases}x=P_x + \\lambda \\text{u}_x + \\mu \\text{v}_x \\\\[1.7ex] y=P_y + \\lambda \\text{u}_y + \\mu \\text{v}_y\\\\[1.7ex] z=P_z + \\lambda\\text{u}_z + \\mu \\text{v}_z \\end{cases} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"313\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuacion-implicita-o-general-del-plano\"><\/span> Equa\u00e7\u00e3o impl\u00edcita ou geral do plano<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> A equa\u00e7\u00e3o impl\u00edcita de um plano, tamb\u00e9m chamada de equa\u00e7\u00e3o geral, \u00e9 obtida resolvendo o seguinte determinante e definindo o resultado como 0:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-68d67612dfa54d76666aa37b702a472f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix}\\text{u}_x &amp; \\text{v}_x &amp; x-P_x \\\\[1.1ex]\\text{u}_y &amp; \\text{v}_y &amp; y-P_y \\\\[1.1ex]\\text{u}_z &amp; \\text{v}_z &amp; z-P_z \\end{vmatrix} = 0\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"163\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> Assim a <strong>equa\u00e7\u00e3o impl\u00edcita ou geral do plano resultante<\/strong> ter\u00e1 a seguinte forma:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7dcacf16123986ecd33dace4f4411914_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle Ax+By+Cz+D=0 \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Este tipo de equa\u00e7\u00e3o plana tamb\u00e9m \u00e9 chamada de equa\u00e7\u00e3o plana cartesiana. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ecuacion-canonica-o-segmentaria-del-plano\"><\/span> Equa\u00e7\u00e3o can\u00f4nica ou segmentar do plano<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> A <strong>f\u00f3rmula para a equa\u00e7\u00e3o can\u00f4nica ou segmentar de um plano<\/strong> \u00e9 a seguinte:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7c19853d465a703aa398bde04fa3222c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle \\cfrac{x}{a}+\\cfrac{y}{b} + \\cfrac{z}{c} = 1  \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Ouro:<\/p>\n<ul>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5c53d6ebabdbcfa4e107550ea60b1b19_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"9\" style=\"vertical-align: 0px;\"><\/p>\n<p> Este \u00e9 o ponto de intersec\u00e7\u00e3o entre o plano e o eixo X.<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f56d50c26583f9a035ff6b4e3c0ca5c0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"b\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p> Este \u00e9 o ponto de intersec\u00e7\u00e3o entre o plano e o eixo Y.<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-41a04eeea923a1a0c28094a8a4680525_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"c\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00c9 aqui que o plano cruza o eixo Z. <\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><\/figure>\n<\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"vector-normal-a-un-plano\"><\/span> Vetor normal a um plano<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> O vetor normal a um plano \u00e9 um vetor perpendicular a todas as retas contidas neste plano. Portanto, um vetor normal a um plano significa que ele \u00e9 perpendicular ao plano.<\/p>\n<p> Muitos problemas m\u00e9tricos em geometria anal\u00edtica espacial dizem respeito a planos e seus vetores normais. Para resolver estes exerc\u00edcios basta conhecer a rela\u00e7\u00e3o matem\u00e1tica entre um plano e seu vetor normal:<\/p>\n<p> <strong>As componentes X, Y, Z do vetor normal a um plano coincidem <strong>respectivamente<\/strong><\/strong> <strong>com os coeficientes A, B, C da equa\u00e7\u00e3o impl\u00edcita (ou geral) do referido plano.<\/strong><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-27f3ee5d7e81864550f3b86fdd53e89d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\color{orange} \\boxed{ \\color{black} \\quad \\pi : \\ Ax+By+C+D = 0 \\quad \\iff \\quad \\vv{n} = (A,B,C) \\quad \\vphantom{\\Bigl(}}\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"540\" style=\"vertical-align: -17px;\"><\/p>\n<\/p>\n<p> Ouro<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-10affe1faee06a5faa4ef6d9c0473b1e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{n}\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"11\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 o vetor ortogonal ao plano <\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-26622dd58bf71cd1b543c3d83233c561_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\pi.\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"posiciones-relativas-de-dos-elementos-geometricos-en-el-espacio\"><\/span> Posi\u00e7\u00f5es relativas de dois elementos geom\u00e9tricos no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Obviamente, uma linha ou um plano n\u00e3o precisam necessariamente estar sozinhos no espa\u00e7o, mas pelo contr\u00e1rio, normalmente interagem entre si: se cruzam, s\u00e3o paralelos, perpendiculares, etc. Bem, nesta se\u00e7\u00e3o veremos as diferentes posi\u00e7\u00f5es relativas de retas e planos e como elas s\u00e3o determinadas. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"posicion-relativa-de-dos-rectas-en-el-espacio\"><\/span> Posi\u00e7\u00e3o relativa de duas linhas no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Na geometria anal\u00edtica, ao trabalhar num espa\u00e7o tridimensional (em R3) existem 4 posi\u00e7\u00f5es relativas poss\u00edveis entre duas retas: duas retas podem ser <strong>retas coincidentes<\/strong> , <strong>retas paralelas<\/strong> , <strong>retas secantes<\/strong> ou <strong>retas secantes<\/strong> . <\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-9\">\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#ff6f00\"> <strong>Linhas paralelas<\/strong> <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/droites-paralleles-a-langle.webp\" alt=\"posi\u00e7\u00e3o relativa de duas linhas paralelas\" class=\"wp-image-1643\" width=\"222\" height=\"200\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p class=\"has-text-align-left\"> Duas retas s\u00e3o paralelas se t\u00eam a mesma dire\u00e7\u00e3o, mas n\u00e3o t\u00eam ponto em comum. Al\u00e9m disso, as linhas paralelas est\u00e3o sempre \u00e0 mesma dist\u00e2ncia umas das outras. <\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#ff6f00\"> <strong>Linhas coincidentes<\/strong> <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/angle-coincident-lignes.webp\" alt=\"posi\u00e7\u00e3o relativa de duas linhas coincidentes\" class=\"wp-image-1646\" width=\"202\" height=\"179\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Duas retas coincidem se tiverem a mesma dire\u00e7\u00e3o e se todos os seus pontos forem comuns. <\/p>\n<\/div>\n<\/div>\n<div class=\"wp-block-columns is-layout-flex wp-container-12\">\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#ff6f00\"> <strong>Linhas de interse\u00e7\u00e3o<\/strong> <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/angles-droits-secants.webp\" alt=\"posi\u00e7\u00e3o relativa de duas linhas que se cruzam\" class=\"wp-image-1644\" width=\"222\" height=\"208\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Duas linhas que se cruzam t\u00eam dire\u00e7\u00f5es diferentes, mas se tocam em um ponto. <\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#ff6f00\"> <strong>Linhas de interse\u00e7\u00e3o<\/strong> <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/lignes-dintersection-1.webp\" alt=\"\" class=\"wp-image-2692\" width=\"228\" height=\"221\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Duas linhas que se cruzam t\u00eam dire\u00e7\u00f5es diferentes e n\u00e3o se cruzam em nenhum ponto. Duas linhas cruzadas n\u00e3o est\u00e3o, portanto, no mesmo plano. Por exemplo, na representa\u00e7\u00e3o gr\u00e1fica acima da linha<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ae1901659f469e6be883797bfd30f4f8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"s\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p> est\u00e1 sempre na frente da linha reta<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c409433a9e2dfcdb83360a974d243f18_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p> , ent\u00e3o eles nunca se tocar\u00e3o.<\/p>\n<\/div>\n<\/div>\n<h4 class=\"wp-block-heading\"> Como encontrar a posi\u00e7\u00e3o relativa de duas linhas por intervalos<\/h4>\n<p> Uma maneira de encontrar a posi\u00e7\u00e3o relativa de duas linhas \u00e9 calcular os contradom\u00ednios de duas matrizes espec\u00edficas, como veremos a seguir. Este m\u00e9todo \u00e9 muito \u00fatil quando as duas retas s\u00e3o expressas na forma de uma equa\u00e7\u00e3o impl\u00edcita (ou geral).<\/p>\n<p> Assim, se tivermos duas retas expressas com suas equa\u00e7\u00f5es impl\u00edcitas (ou gerais) em um espa\u00e7o tridimensional (em R3):<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-500405383e97627c17d01023fd9dd198_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle r: \\ \\begin{cases}A_1x+B_1y+C_1z+D_1=0 \\\\[2ex] A_2x+B_2y+C_2z+D_2=0 \\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"256\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1c96b6990dae5ce476ee55689cf4f4fb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle s: \\ \\begin{cases}A_3x+B_3y+C_3z+D_3=0 \\\\[2ex] A_4x+B_4y+C_4z+D_4=0 \\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"256\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> Seja A a matriz composta pelos coeficientes das duas retas:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9199790c5f157691d9307604f25fc873_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A=\\begin{pmatrix}A_1 &amp; B_1 &amp; C_1\\\\[1.1ex]A_2 &amp; B_2 &amp; C_2\\\\[1.1ex]A_3 &amp; B_3 &amp; C_3\\\\[1.1ex]A_4 &amp; B_4 &amp; C_4 \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"108\" width=\"158\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> E dada a matriz expandida A&#8217;, que \u00e9 a matriz formada por todos os par\u00e2metros das duas retas:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f087aea2d9209341c2acf240eab2bc77_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A'=\\begin{pmatrix}A_1 &amp; B_1 &amp; C_1&amp;D_1\\\\[1.1ex]A_2 &amp; B_2 &amp; C_2&amp;D_2\\\\[1.1ex]A_3 &amp; B_3 &amp; C_3&amp;D_3\\\\[1.1ex]A_4 &amp; B_4 &amp; C_4&amp;D_4 \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"108\" width=\"201\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> Ent\u00e3o, a posi\u00e7\u00e3o relativa das duas linhas pode ser determinada pela extens\u00e3o das duas matrizes anteriores de acordo com a tabela a seguir: <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/positions-relatives-de-deux-lignes-par-plages.webp\" alt=\"posi\u00e7\u00f5es relativas de duas linhas por intervalos\" class=\"wp-image-2752\" width=\"494\" height=\"223\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> <strong>Portanto, para encontrar a posi\u00e7\u00e3o relativa entre duas linhas teremos que calcular os contradom\u00ednios de ambas as matrizes e dependendo do contradom\u00ednio de cada matriz ser\u00e1 um caso ou outro.<\/strong><\/p>\n<p> Este teorema pode ser provado usando o teorema de Rouch\u00e9-Frobenius (m\u00e9todo usado para resolver sistemas de equa\u00e7\u00f5es lineares), por\u00e9m nesta p\u00e1gina n\u00e3o faremos a prova porque \u00e9 bastante complicado e n\u00e3o acrescenta muito. . <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"posicion-relativa-de-dos-planos-en-el-espacio\"><\/span> Posi\u00e7\u00e3o relativa de dois planos no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Na geometria anal\u00edtica, existem apenas tr\u00eas posi\u00e7\u00f5es relativas poss\u00edveis entre dois planos: planos que se cruzam, planos paralelos e planos coincidentes.<\/p>\n<ul>\n<li> <strong>Planos que se cruzam<\/strong> : dois planos est\u00e3o se cruzando se apenas se cruzarem em uma linha.<\/li>\n<li> <strong>Planos paralelos<\/strong> : Dois planos s\u00e3o paralelos se n\u00e3o se cruzam em nenhum ponto.<\/li>\n<li> <strong>Planos coincidentes<\/strong> : dois planos s\u00e3o coincidentes se tiverem todos os pontos em comum. <\/li>\n<\/ul>\n<div class=\"wp-block-columns is-layout-flex wp-container-16\">\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#ff6f00\"> <strong>Fotos que se cruzam<\/strong> <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/plans-secants.webp\" alt=\"posi\u00e7\u00e3o relativa de dois planos que se cruzam\" class=\"wp-image-2814\" width=\"265\" height=\"258\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#ff6f00\"> <strong>planos paralelos<\/strong> <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/plans-paralleles-1.webp\" alt=\"posi\u00e7\u00e3o relativa de dois planos paralelos\" class=\"wp-image-2815\" width=\"266\" height=\"166\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#ff6f00\"> <strong>Planos correspondentes<\/strong> <\/p>\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/deux-avions-coincidents.webp\" alt=\"posi\u00e7\u00e3o relativa de dois planos coincidentes\" class=\"wp-image-2820\" width=\"294\" height=\"83\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<\/div>\n<h4 class=\"wp-block-heading\"> Como determinar a posi\u00e7\u00e3o relativa de dois planos por coeficientes<\/h4>\n<p> Uma forma de saber a posi\u00e7\u00e3o relativa entre dois planos \u00e9 utilizar os coeficientes de suas equa\u00e7\u00f5es gerais (ou impl\u00edcitas).<\/p>\n<p> Considere ent\u00e3o a equa\u00e7\u00e3o geral (ou impl\u00edcita) de dois planos diferentes:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a363201f1d61e53c35c3484a0fe116d3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\pi_1 : \\ Ax+By+Cz+D=0\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"221\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-330dffa3582cfbd92e893f755d2b06a7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\pi_2 : \\ A'x+B'y+C'z+D'=0\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"240\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p> A posi\u00e7\u00e3o relativa entre os dois planos num espa\u00e7o tridimensional depende da proporcionalidade dos seus coeficientes ou par\u00e2metros: <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/position-relative-de-deux-plans-avec-parametres.webp\" alt=\"posi\u00e7\u00e3o relativa de dois planos com par\u00e2metros\" class=\"wp-image-2825\" width=\"483\" height=\"263\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Assim, os dois planos se cruzar\u00e3o quando um dos coeficientes A, B ou C n\u00e3o for proporcional aos demais. Por outro lado, os dois planos ser\u00e3o paralelos quando apenas os termos independentes n\u00e3o forem proporcionais. E, finalmente, os planos coincidir\u00e3o quando todos os coeficientes das duas equa\u00e7\u00f5es forem proporcionais.<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"distancias-en-el-espacio\"><\/span> Dist\u00e2ncias no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Abaixo voc\u00ea encontra as f\u00f3rmulas para calcular a dist\u00e2ncia entre diferentes elementos geom\u00e9tricos: entre um ponto e uma reta, entre dois planos, entre um plano e uma reta,\u2026 <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"distancia-entre-dos-puntos\"><\/span> Dist\u00e2ncia entre dois pontos<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> A dist\u00e2ncia entre dois pontos corresponde \u00e0 norma do vetor determinado por estes 2 pontos.<\/p>\n<p> Ent\u00e3o, se tivermos dois pontos gen\u00e9ricos:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ad4aac8d1ffbf3b22c608d9435b1f218_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"A(a_x,a_y,a_z) \\qquad \\qquad B(b_x,b_y,b_z)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"256\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p> A f\u00f3rmula para a dist\u00e2ncia entre os dois pontos \u00e9: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-62ca9b73f6ae5d7f30dcef0336f46a82_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle d(A,B) = \\vert \\vv{AB} \\rvert = \\sqrt{(b_x-a_x)^2+(b_y-a_y)^2+(b_z-a_z)^2}  \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"distancia-de-un-punto-a-una-recta\"><\/span> Dist\u00e2ncia de um ponto a uma reta<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> A f\u00f3rmula para calcular a dist\u00e2ncia de um ponto a uma linha no espa\u00e7o \u00e9:<\/p>\n<p class=\"has-text-align-center\">\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-817d216618a06e8ae0cce36c33c1518b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle d(s,r)=d(P,r)=\\cfrac{\\lvert \\vv{QP} \\times \\vv{\\text{v}}_r \\rvert}{\\lvert \\vv{\\text{v}}_r \\rvert} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Ouro:<\/p>\n<ul>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-74f213a2a0ca1a22659ce06a80bc5d07_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\lvert \\vv{\\text{v}}_r \\rvert\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"23\" style=\"vertical-align: -5px;\"><\/p>\n<p> \u00e9 o m\u00f3dulo do vetor de dire\u00e7\u00e3o da linha<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-aa03a29f511592c1a1ecc8b306b0cf0d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r.\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"12\" style=\"vertical-align: 0px;\"><\/p>\n<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2c758bec4c272382411b95fc0e7ee250_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"Q\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"14\" style=\"vertical-align: -4px;\"><\/p>\n<p> \u00e9 um ponto \u00e0 direita<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-42ca8c420951296e93092e708435813a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r,\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"12\" style=\"vertical-align: -4px;\"><\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-650eb7688af6737ac325425b5c9a5982_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"14\" style=\"vertical-align: 0px;\"><\/p>\n<p> um ponto na linha<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ae1901659f469e6be883797bfd30f4f8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"s\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p> E<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-fdca087897cc5ad573be7ce2b595dfb3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{QP}\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"28\" style=\"vertical-align: -4px;\"><\/p>\n<p> o vetor definido pelos dois pontos<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-de23c83cb189398d246990817a7e83db_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\lvert \\vv{QP} \\times \\vv{\\text{v}}_r \\rvert\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"72\" style=\"vertical-align: -5px;\"><\/p>\n<p> \u00e9 o m\u00f3dulo do produto vetorial entre os vetores<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-fdca087897cc5ad573be7ce2b595dfb3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{QP}\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"28\" style=\"vertical-align: -4px;\"><\/p>\n<p> E <\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-50f32076ae1ee85f5b7c5a6d43a03089_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{v}}_r\" title=\"Rendered by QuickLaTeX.com\" height=\"11\" width=\"15\" style=\"vertical-align: -3px;\"><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"distancia-entre-dos-rectas\"><\/span> Dist\u00e2ncia entre duas linhas<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> A dist\u00e2ncia entre duas linhas depende de sua posi\u00e7\u00e3o relativa:<\/p>\n<ul id=\"block-14d4b324-92b7-4a1e-8621-c1b0c30f6d2d\">\n<li> Se as duas retas <strong>coincidem<\/strong> ou <strong>se cruzam<\/strong> , a dist\u00e2ncia entre as duas retas \u00e9 igual a zero, pois elas se cruzam (pelo menos) em um ponto.<\/li>\n<li> Quando as duas retas s\u00e3o <strong>paralelas<\/strong> ou <strong>se cruzam,<\/strong> deve-se aplicar uma f\u00f3rmula dependendo do caso (ambas as explica\u00e7\u00f5es est\u00e3o dispon\u00edveis abaixo).<\/li>\n<\/ul>\n<h4 class=\"wp-block-heading\"> Dist\u00e2ncia entre duas linhas paralelas<\/h4>\n<p> Duas linhas paralelas est\u00e3o sempre \u00e0 mesma dist\u00e2ncia. Ent\u00e3o para calcular a dist\u00e2ncia entre duas retas paralelas no espa\u00e7o (em R3) isso \u00e9 feito da mesma forma que no plano (em R2): <strong>basta pegar um ponto em uma das duas retas e encontrar a dist\u00e2ncia a\u00ed \u00e9 deste ponto at\u00e9 a outra linha.<\/strong> <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/distance-entre-un-point-et-une-ligne-en-ligne.webp\" alt=\"dist\u00e2ncia entre duas linhas paralelas no espa\u00e7o\" class=\"wp-image-1960\" width=\"384\" height=\"326\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Portanto, para determinar a dist\u00e2ncia entre 2 retas paralelas voc\u00ea deve usar a f\u00f3rmula da dist\u00e2ncia entre um ponto e uma reta.<\/p>\n<h4 class=\"wp-block-heading\"> Dist\u00e2ncia entre duas linhas que se cruzam<\/h4>\n<p> Seja o vetor de dire\u00e7\u00e3o e qualquer ponto de duas linhas que se cruzam:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-569f8d554a0f3704d247862d0b8ef852_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle r: \\ \\begin{cases} \\vv{\\text{u}} \\\\[2ex] A\\end{cases} \\qquad \\qquad s: \\ \\begin{cases} \\vv{\\text{v}} \\\\[2ex] B\\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"210\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> A f\u00f3rmula para a dist\u00e2ncia entre duas linhas que se cruzam \u00e9:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-08ea38a7e09c81439fa1527cd45b3b45_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle d(r,s)=\\cfrac{\\left|\\left[\\vv{\\text{u}},\\vv{\\text{v}},\\vv{AB}\\right]\\right|}{\\lvert \\vv{\\text{u}} \\times \\vv{\\text{v}} \\rvert} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Ouro:<\/p>\n<ul>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dbc3e38427d29b2f4444ea732f955500_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\left|\\left[\\vv{\\text{u}},\\vv{\\text{v}},\\vv{AB}\\right]\\right|\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"78\" style=\"vertical-align: -5px;\"><\/p>\n<p> \u00e9 o valor absoluto do produto misto dos vetores<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4b6be5a59bbf478047e4f3ace338ee48_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{u}}, \\vv{\\text{v}}\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"27\" style=\"vertical-align: -4px;\"><\/p>\n<p> e o vetor definido pelos pontos<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-25b206f25506e6d6f46be832f7119ffa_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"A\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"13\" style=\"vertical-align: 0px;\"><\/p>\n<p> E<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-770fd1447ccf2fc229801b486b0d8f8a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"B\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"14\" style=\"vertical-align: 0px;\"><\/p>\n<p> .<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a151f35eca7cc81494de906050e773fa_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\lvert \\vv{\\text{u}} \\times \\vv{\\text{v}} \\rvert\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"47\" style=\"vertical-align: -5px;\"><\/p>\n<p> \u00e9 o m\u00f3dulo do produto vetorial entre os vetores de dire\u00e7\u00e3o das duas linhas cruzadas.<\/li>\n<\/ul>\n<p> Embora voc\u00ea tenha a f\u00f3rmula aqui, determinar a dist\u00e2ncia entre duas linhas que se cruzam \u00e9 mais complicado do que parece. Ent\u00e3o se quiser praticar no link a seguir voc\u00ea pode ver exemplos e exerc\u00edcios resolvidos sobre a<a href=\"https:\/\/mathority.org\/pt\/distancia-entre-duas-linhas-que-se-cruzam-no-espaco-de-formulas\/\">dist\u00e2ncia entre duas linhas que se cruzam.<\/a><\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"distancia-de-un-punto-a-un-plano\"><\/span> Dist\u00e2ncia de um ponto a um plano<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Dado um ponto e a equa\u00e7\u00e3o geral (ou impl\u00edcita) de um plano:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-224b2b4bb57594d3fa92e148ada43cbf_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x_0,y_0,z_0) \\qquad \\qquad \\pi: \\ Ax+By+Cz+D=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"379\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> A f\u00f3rmula para a dist\u00e2ncia de um ponto a um plano \u00e9: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b64bff234dc0303219098438374ed049_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle d(P,\\pi) = \\cfrac{\\lvert A\\cdot x_0+B\\cdot y_0+C\\cdot z_0+D\\rvert}{\\sqrt{A^2+B^2+C^2}} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/distance-dun-point-a-un-plan-de-formule.webp\" alt=\"qual \u00e9 a dist\u00e2ncia de um ponto a um plano\" class=\"wp-image-3471\" width=\"416\" height=\"218\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Se aplicando a f\u00f3rmula obtivemos um resultado igual a zero, isso obviamente significa que a dist\u00e2ncia entre o ponto e o plano \u00e9 zero e, portanto, o ponto faz parte deste plano. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"distancia-entre-dos-planos\"><\/span> Dist\u00e2ncia entre dois planos<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> A dist\u00e2ncia entre dois planos no espa\u00e7o depende da posi\u00e7\u00e3o relativa entre estes dois planos:<\/p>\n<ul>\n<li> Se os dois planos se <strong>cruzam<\/strong> ou <strong>coincidem<\/strong> , a dist\u00e2ncia entre eles \u00e9 igual a zero porque se cruzam num determinado ponto.<\/li>\n<li> Se os dois planos forem <strong>paralelos<\/strong> , a dist\u00e2ncia entre os dois planos \u00e9 calculada tomando um ponto em um dos dois planos e calculando a dist\u00e2ncia entre esse ponto e o outro plano.<\/li>\n<\/ul>\n<h4 class=\"wp-block-heading\"> Dist\u00e2ncia entre dois planos paralelos<\/h4>\n<p> Dois planos paralelos est\u00e3o sempre \u00e0 mesma dist\u00e2ncia um do outro, portanto, para determinar a dist\u00e2ncia entre dois planos paralelos, podemos pegar num ponto num dos dois planos e calcular a dist\u00e2ncia desse ponto ao outro plano. <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/distance-entre-deux-plans-paralleles.webp\" alt=\"dist\u00e2ncia entre dois planos paralelos\" class=\"wp-image-2647\" width=\"401\" height=\"234\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Portanto, para calcular a dist\u00e2ncia entre dois planos paralelos, voc\u00ea deve encontrar um ponto em um dos dois planos e, em seguida, usar a f\u00f3rmula da dist\u00e2ncia entre um ponto e um plano.<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"angulos-en-el-espacio\"><\/span> \u00c2ngulos no espa\u00e7o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Tal como acontece com as dist\u00e2ncias, a determina\u00e7\u00e3o do \u00e2ngulo entre dois objetos geom\u00e9tricos no espa\u00e7o depende de suas caracter\u00edsticas geom\u00e9tricas. Porque calcular o \u00e2ngulo formado por duas retas n\u00e3o \u00e9 a mesma coisa que calcular o \u00e2ngulo formado por dois planos. Abaixo voc\u00ea tem as f\u00f3rmulas para encontrar os \u00e2ngulos entre retas e planos.<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"angulo-entre-dos-rectas\"><\/span> \u00c2ngulo entre duas linhas<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Para saber o \u00e2ngulo entre duas retas no espa\u00e7o euclidiano, devemos calcular o \u00e2ngulo formado pelos seus vetores diretores, portanto:<\/p>\n<p class=\"has-text-align-left\"> Dados os vetores de dire\u00e7\u00e3o de duas linhas diferentes:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5680e9dcd5de0da47d99114178d1e104_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{u}} = (\\text{u}_x,\\text{u}_y,\\text{u}_z)\\qquad \\vv{\\text{v}} = (\\text{v}_x,\\text{v}_y,\\text{v}_z)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"267\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p> O <strong>\u00e2ngulo formado por essas duas linhas<\/strong> pode ser calculado com a seguinte f\u00f3rmula:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-622f3563061ace785425ae6d1982173c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle \\cos(\\alpha) =\\cfrac{\\lvert \\vv{\\text{u}} \\cdot \\vv{\\text{v}}\\rvert}{\\lvert \\vv{\\text{u}} \\rvert \\cdot \\lvert \\vv{\\text{v}} \\rvert} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Ouro<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4501274336c637b37c6332eae5c6c229_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\lvert \\vv{\\text{u}} \\rvert\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"16\" style=\"vertical-align: -5px;\"><\/p>\n<p> E<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9a59cd4f2581db3318d38a2a77340a64_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\lvert \\vv{\\text{v}} \\rvert\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"15\" style=\"vertical-align: -5px;\"><\/p>\n<p> s\u00e3o os m\u00f3dulos dos vetores<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-cac24ae79c1e4cbc459f01ed5e4f824e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{u}}\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> E<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-391ac2e3ba0b7f327ba5a0edc1ba162d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{v}}\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"9\" style=\"vertical-align: 0px;\"><\/p>\n<p> respectivamente.<\/p>\n<p> Lembre-se de que a f\u00f3rmula do m\u00f3dulo de um vetor \u00e9: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0be5c4e7144d561d9ade79448036d4dc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\lvert \\vv{\\text{v}} \\rvert = \\sqrt{ \\text{v}_x^2+\\text{v}_y^2+\\text{v}_z^2}\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"155\" style=\"vertical-align: -11px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"angulo-entre-dos-planos\"><\/span> \u00c2ngulo entre dois planos<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> O \u00e2ngulo entre dois planos \u00e9 igual ao \u00e2ngulo formado pelos vetores normais desses planos. Portanto, <strong>para encontrar o \u00e2ngulo entre dois planos, calculamos o \u00e2ngulo formado pelos seus vetores normais, uma vez que s\u00e3o equivalentes<\/strong> .<\/p>\n<p> Dada a equa\u00e7\u00e3o geral (ou impl\u00edcita) de dois planos diferentes: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dfa3d7e6f1ece8353327be7c9227d75b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\pi_1 : \\ A_1x+B_1y+C_1z+D_1=0\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"249\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2c3966346685421fe3e535cf57a5491d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\pi_2 : \\ A_2x+B_2y+C_2z+D_2=0\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"249\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> O vetor normal de cada plano \u00e9:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-eb0ca06882e0d61d6f8134368946ef29_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{n}_1=(A_1,B_1,C_1)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"133\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-22fba6a063a544bdf257e64d8d139238_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{n}_2=(A_2,B_2,C_2)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"133\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> E o \u00e2ngulo formado por esses dois planos \u00e9 determinado calculando o \u00e2ngulo formado por seus vetores normais usando a seguinte f\u00f3rmula: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a0329572a30e8d75bd3795469fe65493_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle \\cos(\\alpha) =\\cfrac{\\lvert \\vv{n}_1 \\cdot \\vv{n}_2\\rvert}{\\lvert \\vv{n}_1 \\rvert \\cdot \\lvert \\vv{n}_2 \\rvert} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"angulo-entre-una-recta-y-un-plano\"><\/span> \u00c2ngulo entre uma reta e um plano<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> O \u00e2ngulo formado por uma reta e um plano \u00e9 definido como o menor dos dois \u00e2ngulos complementares formados pelo vetor diretor da reta e pelo vetor normal do plano.<\/p>\n<p> Portanto, se<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-391ac2e3ba0b7f327ba5a0edc1ba162d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{v}}\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"9\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 o vetor de dire\u00e7\u00e3o da linha e<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-10affe1faee06a5faa4ef6d9c0473b1e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{n}\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"11\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 o vetor normal ao plano:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a3d9337731418dea7088ec8524a171d1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{v}} = (\\text{v}_x,\\text{v}_y,\\text{v}_z)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"114\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ff4913c070cdb4595d69fa08985a1b89_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{n}=(n_x,n_y,n_z)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"119\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p> A f\u00f3rmula usada para calcular o \u00e2ngulo formado por uma linha e um plano \u00e9:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-acbcd07e1439aae1a46f56592841d23c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{taronjaquadreejemplo}{HTML}{FF9800}  \\newtcbox{\\mymath}[1][]{%     nobeforeafter, math upper, tcbox raise base,     enhanced, colframe=taronjaquadreejemplo,      boxrule=1.1pt, boxsep=2mm,     #1} \\begin{empheq}[box={\\mymath[colback=white, shadow={2mm}{-2mm}{0mm}{taronjaquadreejemplo!20!white,} ]}]{equation*}      \\displaystyle \\text{sen}(\\alpha)=\\cfrac{\\lvert \\vv{\\text{v}} \\cdot \\vv{n}\\rvert}{\\lvert \\vv{\\text{v}} \\rvert \\cdot \\lvert \\vv{n} \\rvert} \\end{empheq}\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"329\" style=\"vertical-align: -5px;\"><\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nesta p\u00e1gina voc\u00ea encontrar\u00e1 a explica\u00e7\u00e3o de tudo sobre geometria anal\u00edtica no espa\u00e7o (e as f\u00f3rmulas): as equa\u00e7\u00f5es da reta e do plano, as posi\u00e7\u00f5es relativas entre planos e retas, como dist\u00e2ncias e \u00e2ngulos s\u00e3o calculados no espa\u00e7o,\u2026 O que \u00e9 geometria no espa\u00e7o? A geometria espacial \u00e9 o ramo da geometria respons\u00e1vel pelo estudo &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/pt\/formulas-de-geometria-analitica-no-espaco\/\"> <span class=\"screen-reader-text\">Geometria anal\u00edtica no espa\u00e7o (f\u00f3rmulas)<\/span> Leia mais &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[20],"tags":[],"class_list":["post-74","post","type-post","status-publish","format-standard","hentry","category-pontos-retas-e-planos"],"yoast_head":"<!-- This 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