Raymond Puzio, evin290, Steve Cheng, bci1, J. Pahikkala. "tetrahedron" (version 12). PlanetMath.org. Freely available at http://planetmath.org/Tetrahedron.html.

AMS MSC:

51E99 (Geometry :: Finite geometry and special incidence structures :: Miscellaneous)

NS:published, NS:Section:Reference

not necessarily by Raymond Puzio on 2005-04-02 15:29:47 As you can see, there are a lot of things which can be said about tetrahedra which are not special cases of general facts. Therefore, it is good for the tertrahedra to have their own special place. [ reply | up ]

n-agons and polyhedrons by Pedro A. Fernandez on 2004-06-24 03:07:58 The definition of n-agons and polyhedrons can be exposed in only one entry. I don't see the utility to display so many entries for definitions that are analogous and, beside the point, trivial. [ reply | up ]

Re: n-agons and polyhedrons by Pedro Sanchez on 2004-06-24 20:43:28