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 ...

Keywords cylinder, rectangular prism, pyramid, geometric shapes, properties, triangular faces, bases, edges, vertices Email us at [email protected] if you have questions about the footage and ...

On Reddit, he said: "My son brought home a homework assignment where one of the questions shows a rectangular prism and ... HAS you'll count edges, faces and vertices. 3D shapes have edges ...