\uff3b\u81ea\u5206\u7528\u306e\u30e1\u30e2\uff3d
\n\u706b\u66dc\u65e5\u306e\u671d\uff0c\u30b7\u30e3\u30ef\u30fc\u6d74\u3073\u306a\u304c\u3089\u307c\u3093\u3084\u308a\u8003\u3048\u3066\u3044\u3066\u601d\u3044\u3064\u3044\u305f\u3002<\/p>\n
\u5ea7\u6a19\u5e73\u9762\u3067\uff0c2\u70b9$P(a,b)$, $Q(c,d)$\u3092\u901a\u308b\u76f4\u7dda\u306b\u539f\u70b9\u304b\u3089\u4e0b\u308d\u3057\u305f\u5782\u7dda$OH$\u306e\u9577\u3055$h$\u3092\u6c42\u3081\u308b\u3053\u3068\u3002
\n\u666e\u901a\u306b\u76f4\u7dda\u306e\u65b9\u7a0b\u5f0f\u3092\u6c42\u3081\u3066\uff0c\u4f8b\u306e\u516c\u5f0f\u306b\u4ee3\u5165\u3057\u3066\u3082\u3088\u3044\u304c\uff0c\u4e09\u89d2\u5f62$OPQ$\u306e\u9762\u7a4d$S$\u30922\u901a\u308a\u306b\u8a08\u7b97\u3059\u308b\u3053\u3068\u306b\u3088\u308a\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6c42\u3081\u3089\u308c\u308b\u3002
\n\\begin{gather*}
\n S= \\frac{1}{2}PQ\\cdot h = \\frac{1}{2} \\vert ad-bc\\vert \\\\
\n \\therefore\\quad h=\\frac{\\vert ad-bc\\vert}{\\sqrt{(a-c)^2+(b-d)^2}}
\n\\end{gather*}
\n\u7c21\u5358\u306e\u305f\u3081\u306b\u539f\u70b9\u304b\u3089\u4e0b\u308d\u3057\u305f\u5782\u7dda\u306e\u9577\u3055\u306b\u3057\u305f\u304c\uff0c\u3082\u3061\u308d\u3093\uff0c\u4efb\u610f\u306e\u70b9\u304b\u3089\u4e0b\u308d\u3057\u305f\u5782\u7dda\u3067\u3082\u540c\u69d8\u3067\u3042\u308b\u3002<\/p>\n
\u307e\u3042\uff0c\u76f4\u7dda\u306e\u65b9\u7a0b\u5f0f\u3092\u6c42\u3081\u306a\u304f\u3066\u3088\u3044\uff0c\u3068\u3044\u3046\u70b9\u304c\u3061\u3087\u3063\u3068\u3057\u305f\u5229\u70b9\u3060\u308d\u3046\u304b\u3002\u5fdc\u7528\u3068\u3057\u3066\uff0c3\u6b21\u5143\u7a7a\u9593\u3067\uff0c\u76f4\u7dda\u306b\u70b9\u304b\u3089\u4e0b\u308d\u3057\u305f\u5782\u7dda\u306e\u9577\u3055\u3082\u540c\u69d8\u306b\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\uff3b\u81ea\u5206\u7528\u306e\u30e1\u30e2\uff3d \u706b\u66dc\u65e5\u306e\u671d\uff0c\u30b7\u30e3\u30ef\u30fc\u6d74\u3073\u306a\u304c\u3089\u307c\u3093\u3084\u308a\u8003\u3048\u3066\u3044\u3066\u601d\u3044\u3064\u3044\u305f\u3002 \u5ea7\u6a19\u5e73\u9762\u3067\uff0c2\u70b9$P(a,b)$, $Q(c,d)$\u3092\u901a\u308b\u76f4\u7dda\u306b\u539f\u70b9\u304b\u3089\u4e0b\u308d\u3057\u305f\u5782\u7dda$OH$\u306e\u9577\u3055$h$\u3092\u6c42\u3081\u308b\u3053\u3068\u3002 \u666e\u901a\u306b\u76f4\u7dda\u306e\u65b9\u7a0b\u5f0f\u3092 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-3401","post","type-post","status-publish","format-standard","hentry","category-5"],"_links":{"self":[{"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/posts\/3401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/comments?post=3401"}],"version-history":[{"count":8,"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/posts\/3401\/revisions"}],"predecessor-version":[{"id":3409,"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/posts\/3401\/revisions\/3409"}],"wp:attachment":[{"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/media?parent=3401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/categories?post=3401"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/njet.oops.jp\/wordpress\/wp-json\/wp\/v2\/tags?post=3401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}