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标题: Concave polygon [打印本页]

作者: yma16 时间: 2005-8-16 00:20
标题: Concave polygon

Prove that a concave polygon will be concave when you add new vertices. (the equivalent statement is that a convex n-gon will be convex when you remove a vertex, n>3)

作者: husonghu 时间: 2005-8-16 05:36
标题: hehe,yma16 is a polygon expert. [:B]

hehe,yma16 is a polygon expert.

作者: Jenny 时间: 2005-8-16 15:32
标题: 这不是我的强项[:L]

这不是我的强项

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