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[几何] 很难还原直观图的三视图

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走走看看 posted 2020-11-8 14:53 |Read mode

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kuing posted 2020-11-8 17:59
看到那个六边形应该很容易联想到用平面从中间斜截正方体,截面为六边形的情形啊,所以不难想出就是这样子:
捕获.PNG

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走走看看 + 1 实在是高!

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kuing posted 2020-11-8 18:01
当然了,我还是那句:如果不规定为多面体,则原几何体肯定不唯一(那六边形可以变为曲面)。
就算规定为多面体,唯一性也需要证明。

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original poster 走走看看 posted 2020-11-8 20:20
回复 3# kuing


    本人只想到是由正方体切割的,比划来比划去,还原不了。没想到是一个平面的切割。Kuing太厉害了,不佩服不行啊!

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