What shapes have 8 vertices and 6 flat surfaces?

Answer 1

Any quadrilateral-faced hexahedral prismatoids (e.g. parallelopipeds, rectangular prisms, cubes, etc.)

Answer 2

Oh honey, we're talking about octahedrons here. They've got 8 vertices and 6 flat surfaces, making them the divas of the geometric world. So if you're looking for a shape that's edgy and has all the right angles, octahedrons are where it's at.

Answer 3

Rectangular prism