A patent filed by Apple Inc. shows a new method to print 3D models using triangular tessellation. The patent office approved the method, which breaks smooth surfaces into little triangles that ...

Here we have a square, a circle and a triangle. We're going to use them to form a pattern. This is the pattern formed by the shapes.

The net of a 3D shape is what it looks like if it is opened out flat. There are many types of nets for the different 3D shapes. A net is made from polygons that can be folded and joined to make a ...