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关于三角形重心的猜想

2009-05-23 22:40:32| 分类：有难度的几何题 | 标签： |举报 |字号大中小订阅

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<#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->

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