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woaishuijia 发表于 2014-10-23 09:58 static/image/common/back.gif) n s# |6 v5 `6 s" s 你的确漏条件了:左侧和上方红线的交点是三角形的外心
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oxm44 发表于 2014-10-23 10:30 static/image/common/back.gif' a+ Z5 t- [1 I 16楼的问题出在这里:
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