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loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/05\/fiej13.jpg\" alt=\"\" width=\"600\" height=\"220\" class=\"aligncenter size-full wp-image-6555\" \/><\/p>\n<p>\u4e09\u89d2\u5f62\u306e\u5916\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u3068\u5916\u5206\u70b9P\u306b\u306f\u3001\u3053\u3046\u3057\u305f\u95a2\u4fc2\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u308c\u3067\u306f\u3001\u5916\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u306e\u5b9a\u7406\u304c\u6210\u308a\u7acb\u3064\u3053\u3068\u3092\u8a3c\u660e\u3057\u307e\u3057\u3087\u3046\u3002\u5148\u307b\u3069\u3068\u540c\u3058\u3088\u3046\u306b\u3001\u70b9C\u3092\u901a\u308b\u3088\u3046\u306b\u8fbaAP\u3068\u5e73\u884c\u306a\u7dda\u3092\u5f15\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/05\/fiej16.jpg\" alt=\"\" width=\"600\" height=\"159\" class=\"aligncenter size-full wp-image-6558\" 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loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/05\/fiej10.jpg\" alt=\"\" width=\"541\" height=\"262\" class=\"aligncenter size-full wp-image-6552\" \/><\/p>\n<p>\u6b21\u306b\u3001\u5230\u7740\u70b9\u3067\u3042\u308b\u70b9B\u3068\u70b9C\u306b\u3064\u3044\u3066\u3001\u70b9P\u3092\u5229\u7528\u3057\u3066BP:CP\u3092\u4f5c\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u5185\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u3067\u3082\u5916\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u3067\u3082\u3001AB:AC=BP:CP\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/05\/fiej11.jpg\" alt=\"\" width=\"600\" height=\"151\" class=\"aligncenter size-full wp-image-6553\" \/><\/p>\n<p>\u305d\u306e\u305f\u3081\u3001\u5b9f\u8cea\u7684\u306b\u5185\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u306e\u5b9a\u7406\u3068\u5916\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u306e\u5b9a\u7406\u306f\u540c\u3058\u5185\u5bb9\u3068\u7406\u89e3\u3057\u3066\u3044\u3044\u3067\u3059\u3002<\/p>\n<p><strong>\u30fb\u4e09\u89d2\u5f62\u306e\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u3092\u5229\u7528\u3057\u3001\u8fba\u306e\u6bd4\u3092\u5f97\u308b<\/strong><\/p>\n<p>\u305d\u308c\u3067\u306f\u3001\u5b9f\u969b\u306b\u554f\u984c\u3092\u89e3\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u25b3ABC\u306b\u3064\u3044\u3066\u3001\u2220A\u306e\u5185\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u3068\u8fbaBC\u306e\u4ea4\u70b9\u3092D\u3001\u2220A\u306e\u5916\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u3068\u8fbaBC\u306e\u5ef6\u9577\u7dda\u4e0a\u3068\u306e\u4ea4\u70b9\u3092E\u3068\u3059\u308b\u3068\u304d\u3001\u7dda\u5206DE\u306e\u9577\u3055\u306f\u3044\u304f\u3089\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/05\/fiej17.jpg\" alt=\"\" width=\"600\" height=\"174\" class=\"aligncenter size-full wp-image-6559\" \/><\/p>\n<p>\u307e\u305a\u3001\u5185\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u3092\u5229\u7528\u3057\u3066\u7dda\u5206BD\u306e\u9577\u3055\u3092\u51fa\u3057\u307e\u3057\u3087\u3046\u3002AB:AC=5:3\u306a\u306e\u3067\u3001BD:DC=5:3\u3067\u3059\u3002\u305d\u306e\u305f\u3081\\(BD=a\\)\u3068\u3059\u308b\u3068\u3001\\(5:3=a:6-a\\)\u3067\u3059\u3002\u3053\u308c\u3092\u89e3\u304f\u3068\u3001\\(a=\\displaystyle\\frac{15}{4}\\)cm\u3067\u3059\u3002<\/p>\n<p>\\(5:3=a:6-a\\)<\/p>\n<p>\\(3a=5(6-a)\\)<\/p>\n<p>\\(3a=30-5a\\)<\/p>\n<p>\\(8a=30\\)<\/p>\n<p>\\(a=\\displaystyle\\frac{15}{4}\\)<\/p>\n<p>\u6b21\u306b\u3001\u5916\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u3092\u5229\u7528\u3057\u3066BE\u306e\u9577\u3055\u3092\u51fa\u3057\u307e\u3057\u3087\u3046\u3002AB:AC=5:3\u306a\u306e\u3067\u3001BE:CE=5:3\u3067\u3059\u3002\\(BE=b\\)\u3068\u3059\u308b\u3068\u3001\\(CE=b-6\\)\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\\(5:3=b:b-6\\)\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u89e3\u304f\u3068\u3001\\(b=15\\)\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(5:3=b:b-6\\)<\/p>\n<p>\\(3b=5(b-6)\\)<\/p>\n<p>\\(3b=5b-30\\)<\/p>\n<p>\\(2b=30\\)<\/p>\n<p>\\(b=15\\)<\/p>\n<p>\u3053\u3046\u3057\u3066\\(BD=\\displaystyle\\frac{15}{4}\\)\u3001\\(BE=15\\)\u3068\u308f\u304b\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u7dda\u5206DE\u306e\u9577\u3055\u306f\\(\\displaystyle\\frac{45}{4}\\)\u3067\u3059\u3002<\/p>\n<p>\\(15-\\displaystyle\\frac{15}{4}=\\displaystyle\\frac{45}{4}\\)<\/p>\n<h3>\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u306e\u5b9a\u7406\u306e\u9006\u3067\u306f\u3069\u306e\u3088\u3046\u306b\u554f\u984c\u3092\u89e3\u304f\u306e\u304b<\/h3>\n<p>\u3053\u3053\u307e\u3067\u89e3\u8aac\u3057\u305f\u5185\u5bb9\u306f\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u306e\u5b9a\u7406\u3067\u3059\u3002\u6b21\u306b\u3001\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u306e\u5b9a\u7406\u306e\u9006\u3092\u89e3\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4e09\u89d2\u5f62\u306e\u8fba\u306e\u6bd4\u3092\u5229\u7528\u3057\u305f\u5185\u5206\u70b9P\u3068\u9802\u70b9\u3092\u7d50\u3093\u3060\u70b9\u306b\u3064\u3044\u3066\u3001\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u3067\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u89d2\u306e\u4e8c\u7b49\u5206\u7dda\u306e\u5b9a\u7406\u306e\u9006\u306b\u3064\u3044\u3066\u3001\u4ee5\u4e0b\u306e\u8a3c\u660e\u554f\u984c\u3092\u89e3\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>\u25b3ABC\u306b\u3064\u3044\u3066\u3001\u8fbaBC\u3092AB:AC\u306e\u5272\u5408\u306b\u5185\u5206\u3059\u308b\u70b9\u3092P\u3068\u3059\u308b\u3002AP\u306f\u2220A\u306e\u4e8c\u7b49\u5206\u7dda\u3067\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<\/ul>\n<p>\u307e\u305a\u3001AB\u306e\u5ef6\u9577\u7dda\u4e0a\u306bAC=AD\u3068\u306a\u308b\u7dda\u3092\u5f15\u304d\u307e\u3057\u3087\u3046\u3002\u3064\u307e\u308a\u3001\u4e8c\u7b49\u8fba\u4e09\u89d2\u5f62\u3067\u3042\u308b\u25b3ACD\u3092\u4f5c\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/05\/kejf5.jpg\" alt=\"\" width=\"488\" height=\"381\" class=\"aligncenter size-full wp-image-6617\" 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