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 ...

Knitting may seem like an ancient craft, but researchers at Cornell University and Carnegie Mellon University have reimagined ...

An interactive 3D film about a theory of the construction of the Great Pyramid of Khufu in Egypt, first presented to the public in a 3D theatre in Paris, has now migrated on to the home desktop. To ...

A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape. For example, in the prism ...