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2F推: 從點A和點D對BC作兩條高分別交於P,Q,利用相似三角形06/23 13:44
3F→: 可得BQ=8,PC=(1/8)*h^2。又BC+AD=(BQ+PC-PQ)+AD06/23 13:46
4F→: 因為AD=PQ,所以BQ+PC=25,解得高h=2√34。可得面積06/23 13:49
5F推: 阿上面相似形解錯,應是BQ=16,PC=(1/16)*h^206/24 10:30
1F推: 我覺得這是最直覺的方式,推12/20 21:37
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