A curtain opens on a stage to reveal different shaped animated characters - a sphere, a cube and a pyramid. NARRATOR: It's crunch time for the 3D crew. And who's going to take home the coveted ...

Geometry takes shape in 2 major Phoenix buildings The Pyramid on Central and the Financial Center along Central Avenue are two concrete representations of math.

Some 3D shapes, like cubes and pyramids, can be opened or unfolded along their edges to create a flat shape. The unfolded shape is called the net of the solid. Here are some 3D shapes and their nets.