A regular tetrahedron lies with its four vertices at respective distances from the origin as 1, 2, 3 and 4 units. What is the length of each edge of the tetrahedron?

(In reply to re(2): Is it possible? by Jer)

I agree now that I see that your intervals were derived from triangle inequalities.

Posted by Bractals on 2012-03-08 18:22:18