# Tetrahedron in Cube

Cube and tetrahedron are intimately related. Picking every other vertex of a cube so that no two are joined by an edges but any pair is joined by a diagonal of the cube's face one gets a regular tetrahedron. All edges of that shape are equal and, for that reason, all face angles are 60°.

What if applet does not run? |

Drag the mouse to rotate the cube. Use the right button to remove and put back individual faces.

(**Acknowledgement**: I have learned most of Java details from the implementation by Meiko Rachimow.)

|Activities| |Contact| |Front page| |Contents| |Geometry|

Copyright © 1996-2018 Alexander Bogomolny

68251148