欧拉公式:一个立体图形各个面都是五边形,你能证明2V=3F+4吗
人气：226 ℃ 时间：2020-10-02 03:29:45
解答
欧拉公式:V-E+F =2
一个立体图形各个面都是五边形,E = 5F/2
V-5F/2 + F = 2
2V = 3F +4
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