# Dissection of a Square Pyramid

The applet below illustrates the fact that a square pyramid is a union of six smaller 4-pyramids and four tetrahedron. This fact (leads to a solution to the problem of comparing the volumes of a regular tetrahedron and a square pyramid, with all 14 edges of the two shapes equal.

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.)

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