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一道常见几何题的逆命题

2009-05-23 22:20:13| 分类：有难度的几何题 | 标签： |举报 |字号大中小订阅

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这是人教论坛上的一题，有人给出了繁复的三角方法，还没有简单的平几证法。

一道常见几何题的逆命题 - 纵横之妙趣 - 数学＆华容道

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