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There are no curved edges in a pentagon. Part of the definition of any polygon is that they have straight edges.
A 3D name for a pentagon is a pentagonal prism.
It has 15 edges, 7 faces and 10 vertices
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Oh, dude, a 3D pentagon has five sides and five vertices. It's like a regular pentagon, but in 3D, so it's got some depth to it. Just imagine a 2D pentagon trying to be all fancy and three-dimensional.