National Museum of American History Polyhedron Model by Martin Berman, Square Pyramid National Museum of American History Polyhedron Model by Martin Berman, Pentagonal Pyramid National Museum of ...

A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles ...

There are many types of nets for the different 3D shapes. A net is made from polygons that can be folded and joined to make a polyhedron. Here is the net of a triangular prism. Why not see how ...

National Museum of American History Polyhedron Model by Martin Berman, Regular Tetrahedron National Museum of American History Polyhedron Model by Martin Berman, Regular Octahedron National Museum of ...