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The author has 3 posts.

正四面体的球极投影

Floor 1 4Der 4/9/11 20:47
Floor 2 4Der 4/9/11 20:53
可以数出有4个面,4个点,6条棱

最外面的蓝色环面由于经过投影点所以在屏幕上炸开了

Floor 3 4Der 4/9/11 20:54
可以看出正四面体是倒着投影的(即一个底面与桌面平行,一个顶点挨着桌面的样子)

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