Students at New Vision Charter School have completed work on a 12-foot-tall Sierpinski Tetrahedron, encompassing 4,096 individual triangular pyramids and made entirely out of card stock and glue, and ...
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, is ...