Q:

What are more relevant properties for solving a concept form question?

I was given this problem:

Unite two cubes by lines parallel to one of their faces to form a regular octagon.

The answer is obvious but I have been searching all over the internet for how to solve it. I tried doing it in my head first. Firstly, what kind of geometric transformation can we use on a cube to get parallel lines on the sides? It is 50e0806aeb phylhar
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