12 Sides.... A 3d Square is a cube!!
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The difference is the shape. A cube is a 3D square. A square pyramid is a pyramid with for sides and a square on the bottom.
If it's a proper 3D triangle, it's a tetrahedron. It has four sides, all triangular. If it has four triangular sides and a square base, it's a pyramid.
3D shapes have edges, sides, and intersecting points
If it has no sides then it cannot be a square.
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