ELI5: Explain Like I'm 5

Infinite skew polyhedron

An infinite skew polyhedron is like a lot of different shapes put together all at once. Imagine lots of different shapes like cubes, triangles, and rectangles. Then, imagine that all of these shapes were twisted and bent in different directions, but they were still all put together in one piece. That's what an infinite skew polyhedron looks like!
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