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[几何] 是否存在有7条棱的简单多面体

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isee posted 2018-3-7 20:55 |Read mode

RT。
PS：有且仅有7条棱。

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realnumber posted 2018-3-7 21:33

baike.baidu.com/item/简单多面体/1384389?fr=aladdin
应该不会有
V+F=E+2=9,v>3,F>3
只需要讨论V=4,5,两种，都不符合

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original poster isee posted 2018-3-11 23:26

回复 2# realnumber

就是想提下立几中的欧拉公式。。。。。。。

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