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Well, that depends on what you mean by shape and side.

In a plane, any 2 dimensional figure that has 8 sides is an octogon. Each side is a straight line segment. It doesn't matter if the sides are all the same length or not.

If you are working in 3 dimensional space, then the answer is an octohedron. In this case, the side is a plane figure (a triangle). The regular octohedron is one of the 5 platonic solids, once thought by the ancients to comprise the fundamental building blocks of matter.

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15y ago

What else can I help you with?