这里有两个数学证明，很奇特。是一个台湾人提供的，他的网站：http://www.shareyoucan.com，免费的网上教学，教的挺好，有数学，物理，计算机的教程。
1.所有的三角形都是等边三角形
2.一点到一线有两个垂线的证明
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Fun Math · 有趣诡异的数学
Posted 2009.01.27
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好抓狂啊.......三角形的那个到底怎么回事啊...
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