Prisms are 3D objects with a constant cross section. Pyramids are 3D objects with a flat base and which taper to a vertex. Many three-dimensional objects can be constructed from 2D nets.

A polygon is a 2D shape with straight sides that meet at vertices. Polygons have names that show the number of sides they have. A three-dimensional (3D ... the sides is the difference.

Apple has announced an interesting 3D AI model called Matrix3D that is able to reconstruct 3D objects and scenes from just a ...