[中學] 幾何線段比例
http://imgur.com/a/wnQco
找不出可以直接算比例的方法
請各位幫忙
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推
05/17 12:33, , 1F
05/17 12:33, 1F
推
05/17 12:36, , 2F
05/17 12:36, 2F
→
05/17 13:38, , 3F
05/17 13:38, 3F
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05/17 13:38, , 4F
05/17 13:38, 4F
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05/17 13:39, , 5F
05/17 13:39, 5F
謝謝
設PM=a,MN=b,NO=c
a : b : c = (27+18+a) ; (18+21+b) : (21+33+c)
=> a:b:c = 45:39:54
※ 編輯: Sordirsin (140.122.104.62), 05/17/2017 14:25:22
推
05/17 16:39, , 6F
05/17 16:39, 6F
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05/17 16:41, , 7F
05/17 16:41, 7F
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05/17 16:41, , 8F
05/17 16:41, 8F
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05/17 16:43, , 9F
05/17 16:43, 9F