All pyramids are not Platonic solids. Euler proved the existence of five Platonic solids with unique features and shapes.
False
Not all pyramids are Platonic solids. Pyramids are solid or hollow bodies with a large, generally square base, and a point, while Platonic solids are specific types of regular convex polyhedra. The Platonic solids include tetrahedron, octahedron, icosahedron, cube, and dodecahedron, but not all pyramids fit these criteria.
Euler proved that there are only five regular convex polyhedra known as the Platonic solids, each with distinct characteristics and shapes.
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