# Monge Point of a Tetrahedron

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A Monge plane of a tetrahedron is a plane through the midpoint of an edge and perpendicular to the opposite edge. Monge proved that the six Monge planes intersect at a point, known as the Monge point.

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Contributed by: Izidor Hafner (April 2017)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

The proof can be found in [1, p. 135].

Reference

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

## Permanent Citation

"Monge Point of a Tetrahedron"

http://demonstrations.wolfram.com/MongePointOfATetrahedron/

Wolfram Demonstrations Project

Published: April 25 2017