The point of concurrence of the six planes in Monge's tetrahedron theorem.
Monge Point
See also
Mannheim's Theorem, Monge's Tetrahedron Theorem, Plane, TetrahedronExplore with Wolfram|Alpha
References
Altshiller-Court, N. "The Monge Point." §4.2c in Modern Pure Solid Geometry. New York: Chelsea, pp. 69-71, 1979.Forder, H. G. "Article 1006. A Theorem in Coolidge's 'Circle and Sphere.' " Math. Gaz. 15, pp. 470-471, 1930-1931.Lez, H. and Dugrais, M. "Solution des questions proposées dans les Nouvelles Annales: Question 906." Nouvelles ann. de math. 8, 173, 1869.Monge, G. Corresp. sur l'École Polytech. 2, 266, 1795.Thompson, H. F. "A Geometrical Proof of a Theorem Connected with the Tetrahedron." Proc. Edinburgh Math. Soc. 17, 51-53, 1908-1909.Referenced on Wolfram|Alpha
Monge PointCite this as:
Weisstein, Eric W. "Monge Point." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/MongePoint.html