{"id":369,"date":"2012-04-13T01:35:35","date_gmt":"2012-04-12T16:35:35","guid":{"rendered":"http:\/\/roundown.main.jp\/nyushi\/?p=369"},"modified":"2021-03-23T17:44:34","modified_gmt":"2021-03-23T08:44:34","slug":"kyr201205","status":"publish","type":"post","link":"https:\/\/www.roundown.net\/nyushi\/kyr201205\/","title":{"rendered":"\u4eac\u5927\u7406\u7cfb2012\uff1a\u7b2c5\u554f"},"content":{"rendered":"
\n

\u6b21\u306e\u547d\u984c (p)<\/strong> , (q)<\/strong> \u306e\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066, \u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u7b54\u3048\u3088.\r\n\u6b63\u3057\u3051\u308c\u3070\u8a3c\u660e\u3057, \u6b63\u3057\u304f\u306a\u3051\u308c\u3070\u53cd\u4f8b\u3092\u6319\u3052\u3066\u6b63\u3057\u304f\u306a\u3044\u3053\u3068\u3092\u8aac\u660e\u305b\u3088.<\/p>\r\n

    \r\n

  1. (p)<\/strong>\u3000\u6b63 \\(n\\) \u89d2\u5f62\u306e\u9802\u70b9\u304b\u3089 \\(3\\) \u70b9\u3092\u9078\u3093\u3067\u5185\u89d2\u306e \\(1\\) \u3064\u304c \\(60^{\\circ}\\) \u3067\u3042\u308b\u4e09\u89d2\u5f62\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306a\u3089\u3070, \\(n\\) \u306f \\(3\\) \u306e\u500d\u6570\u3067\u3042\u308b.<\/p><\/li>\r\n

  2. (q)<\/strong>\u3000\u25b3ABC \u3068 \u25b3ABD \u306b\u304a\u3044\u3066, \\(\\text{AC} \\lt \\text{AD}\\) \u304b\u3064 \\(\\text{BC} \\lt \\text{DB}\\) \u306a\u3089\u3070, \\(\\angle \\text{C} \\gt \\angle \\text{D}\\) \u3067\u3042\u308b.<\/p><\/li>\r\n<\/ol>\r\n

    \r\n\r\n

    \u3010 \u89e3 \u7b54 \u3011<\/h4>\r\n

    (p)<\/strong><\/p>\r\n

    \u547d\u984c\u304c\u6b63\u3057\u3044\u3053\u3068\u3092\u793a\u3059.
    \r\n\u6b63 \\(n\\) \u89d2\u5f62\u306e\u9802\u70b9\u3092 \\(\\text{P} _ 1 , \\text{P} _ 2 , \\cdots , \\text{P} _ n\\) , \u5916\u63a5\u5186\u306e\u4e2d\u5fc3\u3092 O \u3068\u304a\u304f.\r\n\u3044\u307e, \\(\\angle \\text{P} _ 1 \\text{P} _ i \\text{P} _ k =60^{\\circ}\\) \uff08 \\(2 \\leqq i \\lt k \\leqq n\\) \uff09\u3068\u306a\u308b\u3068\u304d,\r\n\u5186\u5468\u89d2\u306e\u5b9a\u7406\u304b\u3089\r\n\\[\\begin{align}\r\n\\angle \\text{P} _ 1 \\text{OP} _ k & =\\dfrac{360^{\\circ}}{n} \\cdot k = 120^{\\circ} \\\\\r\n\\text{\u2234} \\quad n & = 3k\r\n\\end{align}\\]\r\n\u3088\u3063\u3066, \\(n\\) \u306f \\(3\\) \u306e\u500d\u6570\u3067\u3042\u308b.<\/p>\r\n

    (q)<\/strong><\/p>\r\n

    \u547d\u984c\u306f\u6b63\u3057\u304f\u306a\u3044\u306e\u3067, \u53cd\u4f8b\u3092\u793a\u3059.
    \r\n\u4e0b\u56f3\u306e\u3088\u3046\u306b, AB \u304c\u4ed6\u306e\u8fba\u3088\u308a\u77ed\u3044\u5834\u5408\u3092\u8003\u3048\u308b\u3068,\r\n\\(\\angle \\text{C} = \\angle \\text{D}\\) \u3068\u306a\u308b\u3053\u3068\u304c\u3042\u308b\u3068\u3044\u3048\u308b.<\/p>\r\n\"\"","protected":false},"excerpt":{"rendered":"\u6b21\u306e\u547d\u984c (p) , (q) \u306e\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066, \u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u7b54\u3048\u3088. \u6b63\u3057\u3051\u308c\u3070\u8a3c\u660e\u3057, \u6b63\u3057\u304f\u306a\u3051\u308c\u3070\u53cd\u4f8b\u3092\u6319\u3052\u3066\u6b63\u3057\u304f\u306a\u3044\u3053\u3068\u3092\u8aac\u660e\u305b\u3088. (p)\u3000\u6b63 \\(n\\) \u89d2\u5f62\u306e\u9802\u70b9\u304b\u3089 \\(3\\) \u70b9\u3092\u9078\u3093\u3067\u5185\u89d2\u306e … \u7d9a\u304d\u3092\u8aad\u3080 →<\/span><\/a>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[59],"tags":[140,68],"class_list":["post-369","post","type-post","status-publish","format-standard","hentry","category-kyoto_r_2012","tag-kyoto_r","tag-68"],"_links":{"self":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts\/369","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/comments?post=369"}],"version-history":[{"count":0,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts\/369\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/media?parent=369"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/categories?post=369"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/tags?post=369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}