# Completing a Tetrahedron to a Parallelepiped

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This Demonstration shows a completion of a tetrahedron to a parallelepiped . The four vertices of are vertices of , and the edges of become four diagonals on the faces of .

Contributed by: Izidor Hafner (March 2017)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

The construction is described in [1, pp. 106–107].

Reference

[1] V. V. Prasolov and I. F. Sharygin, *Problems in Stereometry* (in Russian), Moscow: Nauka, 1989.

## Permanent Citation

"Completing a Tetrahedron to a Parallelepiped"

http://demonstrations.wolfram.com/CompletingATetrahedronToAParallelepiped/

Wolfram Demonstrations Project

Published: March 14 2017