{"id":3306,"date":"2021-05-28T18:14:39","date_gmt":"2021-05-28T09:14:39","guid":{"rendered":"https:\/\/hatsudy.com\/jp\/?p=3306"},"modified":"2022-07-14T00:40:53","modified_gmt":"2022-07-13T15:40:53","slug":"inscribed-angle","status":"publish","type":"post","link":"https:\/\/hatsudy.com\/jp\/inscribed-angle.html","title":{"rendered":"\u5186\u5468\u89d2\u306e\u5b9a\u7406\uff1a\u89d2\u5ea6\u306e\u8a08\u7b97\u65b9\u6cd5\u3068\u4e2d\u5fc3\u89d2\u30fb\u5f27\u306e\u9577\u3055\u306e\u95a2\u4fc2"},"content":{"rendered":"\n<p>\u4e2d\u5b66\u6570\u5b66\u3067\u5b66\u3076\u5206\u91ce\u306e\u4e00\u3064\u304c<span style=\"color: #ff0000;\">\u5186\u5468\u89d2<\/span>\u3067\u3059\u3002\u5186\u3092\u5229\u7528\u3057\u305f\u89d2\u5ea6\u304c\u5186\u5468\u89d2\u3067\u3042\u308a\u3001\u5186\u5468\u89d2\u306e\u6027\u8cea\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u89d2\u5ea6\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5186\u5468\u89d2\u306b\u306f\u6027\u8cea\u304c\u3042\u308a\u3001\u3053\u308c\u3092\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3068\u3044\u3044\u307e\u3059\u3002\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3092\u7406\u89e3\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u89d2\u5ea6\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u307e\u305f\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3092\u5229\u7528\u3057\u305f\u5fdc\u7528\u554f\u984c\u3082\u5b58\u5728\u3059\u308b\u305f\u3081\u3001\u5186\u306e\u4e2d\u306b\u3042\u308b\u89d2\u5ea6\u3092\u3069\u3046\u8a08\u7b97\u3059\u308b\u306e\u304b\u7279\u6b8a\u306a\u4f8b\u3092\u542b\u3081\u3066\u5b66\u3076\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u308c\u3067\u306f\u3001\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3092\u3069\u306e\u3088\u3046\u306b\u5229\u7528\u3057\u3066\u8a08\u7b97\u554f\u984c\u3092\u89e3\u3051\u3070\u3044\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u307e\u305f\u3001\u305d\u3082\u305d\u3082\u5186\u5468\u89d2\u3068\u306f\u4f55\u306a\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u4e2d\u5b66\u6570\u5b66\u306e\u56f3\u5f62\u3067\u5b66\u3076\u5186\u5468\u89d2\u306e\u5b9a\u7406\u306b\u3064\u3044\u3066\u3001\u3069\u306e\u3088\u3046\u306a\u5185\u5bb9\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u304b\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>\u5186\u5468\u89d2\u3068\u306f\u4f55\u304b\uff1f\u5f27\u3068\u4e2d\u5fc3\u89d2\u306e\u610f\u5473<\/h2>\n<p>\u307e\u305a\u3001\u5186\u5468\u89d2\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u3002\u5186\u5468\u89d2\u3092\u7406\u89e3\u3059\u308b\u524d\u306b\u3001\u5f27\u3068\u4e2d\u5fc3\u89d2\u306b\u3064\u3044\u3066\u5b66\u3070\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002\u5186\u306b\u3064\u3044\u3066\u3001\u4ee5\u4e0b\u306e\u90e8\u5206\u304c\u5f27\u3068\u4e2d\u5fc3\u89d2\u3067\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3312\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht6.jpg\" alt=\"\" width=\"319\" height=\"271\" \/><\/p>\n<p><span style=\"color: #0000ff;\">\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3092\u5229\u7528\u3059\u308b\u3068\u304d\u3001\u5f27\u3068\u4e2d\u5fc3\u89d2\u3092\u983b\u7e41\u306b\u5229\u7528\u3057\u307e\u3059\u3002<\/span>\u305d\u306e\u305f\u3081\u3001\u3069\u306e\u90e8\u5206\u304c\u5f27\u3084\u4e2d\u5fc3\u89d2\u306a\u306e\u304b\u628a\u63e1\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4e00\u65b9\u3067\u5186\u5468\u89d2\u306f\u4ee5\u4e0b\u306e\u90e8\u5206\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3314\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht10.jpg\" alt=\"\" width=\"332\" height=\"297\" \/><\/p>\n<p>\u5f27AB\u3092\u6570\u5b66\u3067\u306f\\(\\stackrel{\\huge\\frown}{AB}\\)\u3068\u8868\u3057\u307e\u3059\u3002\\(\\stackrel{\\huge\\frown}{AB}\\)\u306b\u5bfe\u3059\u308b\u2220APB\u3092\u5186\u5468\u89d2\u3068\u3044\u3044\u307e\u3059\u3002\u5186\u5468\u89d2\u306b\u306f\u5fc5\u305a\u5f27\u304c\u5b58\u5728\u3057\u307e\u3059\u3002\u307e\u305f\u5186\u5468\u89d2\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u5fc5\u305a\u4e2d\u5fc3\u89d2\u3082\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n<h2>\u5186\u5468\u89d2\u306e\u5b9a\u7406\u306f2\u3064\u3042\u308b<\/h2>\n<p>\u305d\u308c\u3067\u306f\u3001\u5186\u5468\u89d2\u306e\u5b9a\u7406\u306b\u306f\u4f55\u304c\u3042\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u5186\u5468\u89d2\u306b\u306f2\u3064\u306e\u6027\u8cea\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u4e2d\u5fc3\u89d2\u306e\u534a\u5206\u304c\u5fc5\u305a\u5186\u5468\u89d2\u306b\u306a\u308b<\/li>\n<li>\u5f27\u306e\u9577\u3055\u304c\u540c\u3058\u5834\u5408\u3001\u5fc5\u305a\u5186\u5468\u89d2\u306f\u7b49\u3057\u3044<\/li>\n<\/ul>\n<p>\u5186\u5468\u89d2\u306e\u5b9a\u7406\u306e\u5185\u5bb9\u3092\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u4e2d\u5fc3\u89d2\u306e\u534a\u5206\u304c\u5fc5\u305a\u5186\u5468\u89d2\u306b\u306a\u308b<\/h3>\n<p>\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3067\u306f\u4e2d\u5fc3\u89d2\u304c\u983b\u7e41\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u7406\u7531\u3068\u3057\u3066\u3001\u5186\u5468\u89d2\u3068\u4e2d\u5fc3\u89d2\u306f\u4ee5\u4e0b\u306e\u95a2\u4fc2\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u5186\u5468\u89d2 \u00d7 2 = \u4e2d\u5fc3\u89d2<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3316\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht12.jpg\" alt=\"\" width=\"267\" height=\"294\" \/><\/p>\n<p>\u4f8b\u3048\u3070\u5186\u5468\u89d2\u304c30\u00b0\u306e\u5834\u5408\u3001\u4e2d\u5fc3\u89d2\u306f\u5fc5\u305a60\u00b0\u3067\u3059\u3002<span style=\"color: #ff0000;\">\u5186\u5468\u89d2\u3092\u4e8c\u500d\u3059\u308c\u3070\u4e2d\u5fc3\u89d2\u306e\u89d2\u5ea6\u306b\u306a\u308a\u307e\u3059\u3002<\/span>\u4e00\u65b9\u3067\u4e2d\u5fc3\u89d2\u304c80\u00b0\u306e\u5834\u5408\u3001\u5186\u5468\u89d2\u306f\u5fc5\u305a40\u00b0\u3067\u3059\u3002\u4e2d\u5fc3\u89d2\u306e\u534a\u5206\u304c\u5186\u5468\u89d2\u306e\u89d2\u5ea6\u3067\u3059\u3002<\/p>\n<h3>\u5f27\u306e\u9577\u3055\u304c\u540c\u3058\u5834\u5408\u3001\u5fc5\u305a\u5186\u5468\u89d2\u306f\u7b49\u3057\u3044<\/h3>\n<p>\u4ed6\u306b\u3082\u5186\u5468\u89d2\u306e\u5b9a\u7406\u304c\u3042\u308a\u307e\u3059\u3002\u540c\u3058\u5186\u306b\u3064\u3044\u3066\u3001<span style=\"color: #0000ff;\">\u5f27\u306e\u9577\u3055\u304c\u540c\u3058\u5834\u5408\u306f\u5186\u5468\u89d2\u304c\u7b49\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/span>\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u5186\u5468\u89d2\u306f\u3059\u3079\u3066\u540c\u3058\u89d2\u5ea6\u3067\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3319\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht13-1.jpg\" alt=\"\" width=\"268\" height=\"297\" \/><\/p>\n<p>\u540c\u3058\u5f27\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u4ed6\u306e\u89d2\u5ea6\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u56f3\u306b\u3064\u3044\u3066\u3001\\(a\\)\u306e\u89d2\u5ea6\u306f\u3044\u304f\u3089\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3321\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht15.jpg\" alt=\"\" width=\"312\" height=\"253\" srcset=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht15.jpg 312w, https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht15-246x200.jpg 246w\" sizes=\"auto, (max-width: 312px) 100vw, 312px\" \/><\/p>\n<p>\\(\\stackrel{\\huge\\frown}{BC}\\)\u306b\u7740\u76ee\u3059\u308b\u3068\u3001\u2220BDC\u306f20\u00b0\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\\(a\\)\u306e\u89d2\u5ea6\u306f20\u00b0\u3068\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<h2>\u5f27\u304c\u534a\u5186\u306e\u5834\u5408\u3001\u5186\u5468\u89d2\u306f90\u00b0\u306b\u306a\u308b<\/h2>\n<p>\u3053\u3053\u307e\u3067\u3001\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3067\u6700\u3082\u57fa\u672c\u7684\u306a\u3053\u3068\u3092\u8ff0\u3079\u307e\u3057\u305f\u3002\u305f\u3060\u3001\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3092\u5229\u7528\u3059\u308b\u8a08\u7b97\u554f\u984c\u3067\u306f\u3001\u3088\u308a\u8907\u96d1\u306a\u554f\u984c\u304c\u51fa\u984c\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5fdc\u7528\u554f\u984c\u3092\u89e3\u3051\u308b\u3088\u3046\u306b\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002\u3053\u306e\u3068\u304d\u983b\u7e41\u306b\u5229\u7528\u3055\u308c\u308b\u5185\u5bb9\u3068\u3057\u3066\u3001\u5f27\u304c\u534a\u5186\u306e\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5f27\u304c\u534a\u5186\u306e\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3323\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht16.jpg\" alt=\"\" width=\"261\" height=\"250\" \/><\/p>\n<p>\u5f27\u304c\u534a\u5186\u3060\u3068\u4e2d\u5fc3\u89d2\u306f180\u00b0\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5186\u5468\u89d2\u306f\u5fc5\u305a90\u00b0\u306b\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u3069\u306e\u5186\u5468\u89d2\u3067\u3042\u3063\u3066\u308290\u00b0\u3067\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3324\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht17.jpg\" alt=\"\" width=\"330\" height=\"249\" \/><\/p>\n<p>\u4e2d\u5fc3\u89d2\u304c\u7279\u6b8a\u306a\u5f62\u306b\u306a\u308b\u3068\u3001\u5186\u5468\u89d2\u306e\u89d2\u5ea6\u304c\u5206\u304b\u308a\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002\u3044\u305a\u308c\u306b\u3057\u3066\u3082\u5f27\u304c\u534a\u5186\u306e\u5834\u5408\u3001\u5186\u5468\u89d2\u306f\u5fc5\u305a90\u00b0\u306b\u306a\u308b\u3068\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u534a\u5186\u3088\u308a\u3082\u5927\u304d\u3044\u5f27\u306e\u5186\u5468\u89d2\u306f\u3069\u3046\u306a\u308b\u306e\u304b<\/h3>\n<p>\u4e00\u65b9\u3067\u534a\u5186\u3088\u308a\u3082\u5927\u304d\u3044\u5f27\u306e\u5186\u5468\u89d2\u306f\u3069\u306e\u3088\u3046\u306b\u8003\u3048\u308c\u3070\u3044\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u5f27\u306e\u9577\u3055\u304c\u5c0f\u3055\u3044\u3068\u304d\u304c\u3042\u308c\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5f27\u304c\u9577\u3044\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3325\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht18.jpg\" alt=\"\" width=\"313\" height=\"296\" \/><\/p>\n<p>\u8003\u3048\u65b9\u306f\u3053\u308c\u307e\u3067\u8aac\u660e\u3057\u305f\u5185\u5bb9\u3068\u540c\u3058\u3067\u3059\u3002\u5f27\u304c\u534a\u5186\u3088\u308a\u3082\u9577\u3044\u5834\u5408\u3001\u4e2d\u5fc3\u89d2\u306f180\u00b0\u4ee5\u4e0a\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001<span style=\"color: #ff0000;\">\u5186\u5468\u89d2\u306f\u5fc5\u305a90\u00b0\u4ee5\u4e0a\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<p>\u5f27\u306e\u9577\u3055\u306f\u5fc5\u305a\u3057\u3082\u534a\u5186\u3088\u308a\u3082\u77ed\u3044\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u4eca\u56de\u306e\u3088\u3046\u306b\u3001\u534a\u5186\u3088\u308a\u3082\u9577\u3044\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001\u3069\u3053\u304c\u4e2d\u5fc3\u89d2\u3067\u3042\u308a\u3001\u3069\u3053\u304c\u5186\u5468\u89d2\u306a\u306e\u304b\u7406\u89e3\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4e2d\u5fc3\u89d2\u3068\u5186\u5468\u89d2\u306e\u95a2\u4fc2\u3092\u8003\u3048\u308b\u306e\u306f\u9593\u9055\u3044\u3067\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3326\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht21.jpg\" alt=\"\" width=\"310\" height=\"301\" \/><\/p>\n<p>\u4e0a\u56f3\u3067\u306f\u3001\u4e2d\u5fc3\u89d2\u306f180\u00b0\u3088\u308a\u3082\u5c0f\u3055\u3044\u3067\u3059\u3002\u305d\u308c\u306b\u3082\u95a2\u308f\u3089\u305a\u3001\u56f3\u3092\u307f\u308b\u9650\u308a\u5186\u5468\u89d2\u306f90\u00b0\u3088\u308a\u3082\u5927\u304d\u3044\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u3053\u306e\u95a2\u4fc2\u3067\u306e\u4e2d\u5fc3\u89d2\u3068\u5186\u5468\u89d2\u306f\u660e\u3089\u304b\u306b\u9593\u9055\u3044\u3068\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e2d\u5fc3\u89d2\u3068\u5186\u5468\u89d2\u304c\u3069\u306e\u5834\u6240\u306b\u3042\u308b\u306e\u304b\u6b63\u78ba\u306b\u628a\u63e1\u3057\u306a\u3051\u308c\u3070\u6b63\u3057\u304f\u89d2\u5ea6\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u7279\u306b\u5f27\u304c\u534a\u5186\u3088\u308a\u3082\u9577\u3044\u5834\u5408\u3001\u30df\u30b9\u304c\u8d77\u3053\u308a\u3084\u3059\u3044\u3067\u3059\u3002\u305d\u3053\u3067\u4e2d\u5fc3\u89d2\u304c180\u00b0\u3088\u308a\u3082\u5927\u304d\u3044\u5834\u5408\u3001\u5186\u5468\u89d2\u304c90\u00b0\u3088\u308a\u3082\u5927\u304d\u304f\u306a\u3063\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u5186\u306b\u5185\u63a5\u3059\u308b\u56db\u89d2\u5f62\u3067\u5bfe\u89d2\u306e\u89d2\u5ea6\u3092\u8db3\u3059\u3068180\u00b0\u306b\u306a\u308b<\/h3>\n<p>\u3053\u3053\u307e\u3067\u306e\u5185\u5bb9\u3092\u5b66\u3079\u3070\u3001\u5186\u306b\u5185\u63a5\u3059\u308b\u56db\u89d2\u5f62\u306e\u89d2\u5ea6\u306e\u6027\u8cea\u3092\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u5186\u306b\u5185\u63a5\u3059\u308b\u56db\u89d2\u5f62\u306b\u3064\u3044\u3066\u3001\u5bfe\u89d2\u3092\u8db3\u3059\u3068\u5fc5\u305a180\u00b0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3327\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht23.jpg\" alt=\"\" width=\"359\" height=\"248\" \/><\/p>\n<p>\u306a\u305c\u30012\u3064\u306e\u89d2\u5ea6\u3092\u8db3\u3059\u3068180\u00b0\u306b\u306a\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u306e\u7406\u7531\u306b\u3064\u3044\u3066\u3001\u3053\u3053\u307e\u3067\u5b66\u3093\u3060\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3092\u5229\u7528\u3057\u3066\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u305d\u308c\u305e\u308c\u306e\u89d2\u306b\u3064\u3044\u3066\u3001\u5f27\u3068\u4e2d\u5fc3\u89d2\u3001\u5186\u5468\u89d2\u306e\u95a2\u4fc2\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3328\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht25.jpg\" alt=\"\" width=\"600\" height=\"225\" \/><\/p>\n<p>\u91cd\u8981\u306a\u306e\u306f\u30012\u3064\u306e\u4e2d\u5fc3\u89d2\u3092\u8db3\u3059\u3068360\u00b0\u306b\u306a\u308b\u3053\u3068\u3067\u3059\u3002\u307e\u305f\u5186\u5468\u89d2\u306f\u4e2d\u5fc3\u89d2\u306e\u534a\u5206\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u30012\u3064\u306e\u5186\u5468\u89d2\uff08\u5bfe\u89d2\uff09\u3092\u8db3\u3059\u3068180\u00b0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u5186\u306b\u5185\u63a5\u3059\u308b\u56db\u89d2\u5f62\u306b\u3064\u3044\u3066\u3001\u5bfe\u89d2\u3092\u8db3\u3059\u3068180\u00b0\u306b\u306a\u308b\u6027\u8cea\u3092\u899a\u3048\u3066\u304a\u3051\u3070\u89d2\u5ea6\u306e\u8a08\u7b97\u3067\u5f79\u7acb\u3061\u307e\u3059\u3002\u5186\u306b\u56db\u89d2\u5f62\u304c\u5185\u63a5\u3057\u3066\u3044\u308b\u5fc5\u8981\u306f\u3042\u308b\u3082\u306e\u306e\u3001\u5bfe\u89d2\u3092\u8db3\u3059\u3068\u5fc5\u305a180\u00b0\u306b\u306a\u308b\u3053\u3068\u3092\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u5f27\u306e\u9577\u3055\u3068\u5186\u5468\u89d2\u306f\u6bd4\u4f8b\u3059\u308b<\/h3>\n<p>\u307e\u305f\u3001\u540c\u3058\u5186\u306b\u3064\u3044\u3066\u5f27\u306e\u9577\u3055\u3068\u5186\u5468\u89d2\u306f\u6bd4\u4f8b\u3057\u307e\u3059\u3002\u3064\u307e\u308a<span style=\"color: #0000ff;\">\u5f27\u306e\u9577\u3055\u304c2\u500d\u306b\u306a\u308c\u3070\u3001\u5186\u5468\u89d2\u30822\u500d\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<p>\u4e2d\u5fc3\u89d2\u3068\u5f27\u306e\u9577\u3055\u304c\u6bd4\u4f8b\u3059\u308b\u3053\u3068\u306f\u7406\u89e3\u3057\u3084\u3059\u3044\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u4e2d\u5fc3\u89d2\u304c30\u00b0\u304b\u308960\u00b0\u306b\u5897\u3048\u308c\u3070\u3001\u5f27\u306e\u9577\u3055\u306f2\u500d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3330\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/erht28.jpg\" alt=\"\" width=\"499\" height=\"251\" \/><\/p>\n<p>\u5f27\u306e\u9577\u3055\u306f\u5186\u5468\u3068\u4e2d\u5fc3\u89d2\u3092\u5229\u7528\u3057\u3066\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u5186\u306e\u76f4\u5f84\u3092\\(b\\)\u3068\u3059\u308b\u3068\u304d\u3001\u4e2d\u5fc3\u89d230\u00b0\u306e\u5f27\u306e\u9577\u3055\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(b\u00d7\u03c0\u00d7\\displaystyle\\frac{30\u00b0}{360\u00b0}\\)<\/li>\n<\/ul>\n<p>\u4e00\u65b9\u3067\u4e2d\u5fc3\u89d260\u00b0\u306e\u5f27\u306e\u9577\u3055\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(b\u00d7\u03c0\u00d7\\displaystyle\\frac{60\u00b0}{360\u00b0}\\)<\/li>\n<\/ul>\n<p>\u3053\u306e\u3088\u3046\u306b\u4e2d\u5fc3\u89d2\u304c2\u500d\u306b\u306a\u308c\u3070\u3001\u5f27\u306e\u9577\u3055\u306f2\u500d\u306b\u306a\u308a\u307e\u3059\u3002\u540c\u3058\u3088\u3046\u306b\u8003\u3048\u308c\u3070\u3001\u5186\u5468\u89d2\u304c2\u500d\u306b\u306a\u308c\u3070\u3001\u5f27\u306e\u9577\u3055\u306f2\u500d\u306b\u306a\u308a\u307e\u3059\u3002\u4e2d\u5fc3\u89d2\u3068\u5f27\u306e\u9577\u3055\u306f\u6bd4\u4f8b\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u4e2d\u5fc3\u89d2\u3068\u5186\u5468\u89d2\u306f\u6bd4\u4f8b\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5186\u5468\u89d2\u3068\u5f27\u306e\u9577\u3055\u306f\u6bd4\u4f8b\u3057\u307e\u3059\u3002<\/p>\n<p>\u540c\u69d8\u306b\u8003\u3048\u308b\u3068\u3001\u4e2d\u5fc3\u89d2\u307e\u305f\u306f\u5186\u5468\u89d2\u304c3\u500d\u306b\u306a\u308b\u3068\u3001\u5f27\u306e\u9577\u3055\u306f3\u500d\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u5f27\u306e\u9577\u3055\u304c4\u500d\u306b\u306a\u308b\u3068\u3001\u4e2d\u5fc3\u89d2\u3068\u5186\u5468\u89d2\u306f4\u500d\u306b\u306a\u308a\u307e\u3059\u3002\u5f27\u306e\u9577\u3055\u3068\u5186\u5468\u89d2\u304c\u6bd4\u4f8b\u3059\u308b\u3053\u3068\u3092\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u7df4\u7fd2\u554f\u984c\uff1a\u5186\u5468\u89d2\u306e\u5b9a\u7406\u3092\u5229\u7528\u3057\u3066\u89d2\u5ea6\u3092\u8a08\u7b97\u3059\u308b<\/h2>\n<p><strong>Q1.<\/strong>\u00a0\u6b21\u306e\u89d2\u5ea6\u3092\u6c42\u3081\u307e\u3057\u3087\u3046<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3400\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/r5u5s1.jpg\" alt=\"\" width=\"600\" height=\"251\" \/><\/p>\n<p><strong>A1<\/strong>. \u89e3\u7b54<\/p>\n<p>\u89d2\u5ea6\u3092\u6c42\u3081\u308b\u554f\u984c\u3067\u306f\u3001\u5206\u304b\u308b\u89d2\u5ea6\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u8a18\u5165\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u305d\u3046\u3059\u308c\u3070\u3001\u6700\u7d42\u7684\u306b\u89d2\u5ea6\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u89d2\u5ea6\u306e\u51fa\u3057\u65b9\u306f\u4e00\u3064\u3067\u306f\u306a\u304f\u3001\u8907\u6570\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u3069\u306e\u65b9\u6cd5\u3067\u3042\u3063\u3066\u3082\u3001\u7b54\u3048\u3092\u5c0e\u304d\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308c\u3070\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><strong>(a)<\/strong><\/p>\n<p>\u2220ADC\u306b\u5bfe\u5fdc\u3059\u308b\u5f27\u306f\\(\\stackrel{\\huge\\frown}{ABC}\\)\u3067\u3059\u3002\u4e2d\u5fc3\u89d2\u306f\u5186\u5468\u89d2\u306e\u4e8c\u500d\u306a\u306e\u3067\u3001\u4e2d\u5fc3\u89d2\u306f220\u00b0\u3067\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3342\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2021\/05\/uefw3.jpg\" alt=\"\" width=\"340\" height=\"296\" \/><\/p>\n<p>\u2220AOB\u306f180\u00b0\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\\(\u2220a\\)\u306f40\u00b0\u3067\u3059\u3002<\/p>\n<ul>\n<li>220\u00b0 \uff0d 180\u00b0 \uff1d 40\u00b0<\/li>\n<\/ul>\n<p><strong>(b)<\/strong><\/p>\n<p>\u8907\u96d1\u306a\u554f\u984c\u306e\u5834\u5408\u3001\u4e00\u90e8\u306e\u5929\u624d\u3092\u9664\u3044\u3066\u7b54\u3048\u3092\u3059\u3050\u306b\u51fa\u3059\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u7a4d\u6975\u7684\u306b\u56f3\u306b\u7dda\u3092\u5f15\u304d\u3001\u89d2\u5ea6\u3092\u8a18\u5165\u3057\u307e\u3057\u3087\u3046\u3002\u305d\u3046\u3059\u308c\u3070\u3001\u6700\u7d42\u7684\u306b\u7b54\u3048\u3092\u51fa\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e2d\u5fc3O\u304b\u3089\u7dda\u3092\u5f15\u304f\u5834\u5408\u3001\u5fc5\u305a\u9577\u3055\u306f\u540c\u3058\u306b\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u4e8c\u7b49\u8fba\u4e09\u89d2\u5f62\u3092\u4f5c\u308c\u307e\u3059\u3002\u4e8c\u7b49\u8fba\u4e09\u89d2\u5f62\u3067\u306f\u5e95\u89d2\u304c\u540c\u3058\u306a\u306e\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u89d2\u5ea6\u3092\u5c0e\u304d\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img 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