What's the largest regular tetrahedron (side length x) you can fit inside a sphere with a radius of one?
How do I calculate: The height of a regular tetrahedron, side length 1. Just to be completely clear, by height I mean if you placed the shape on a table, how high up would the highest point be from ...
How to calculate volume of tetrahedron given lengths of all it's edges?
It appears to me that only Triangles, Squares, and Pentagons are able to "tessellate" (is that the proper word in this context?) to become regular 3D convex polytopes. What property of those regular ...