### Related items

#### Euclid of Alexandria

The Ancient Greek scientist, Euclid of Alexandria, is often referred to as the 'father of geometry'.

#### Platonic solids

This animation demonstrates the five regular three-dimensional (or Platonic) solids, the best known of which is the cube.

#### Regular square pyramid

A regular square pyramid is a right pyramid with a square base and four triangular faces.

#### Volume of a tetrahedron

To calculate the volume of a tetrahedron we start by calculating the volume of a prism.