![](http://perplexus.info/images/perplexus/problem/pythag_pyr.gif)
The pictured tetrahedron has four identical rectangular (i.e., right-angled or pythagorean) triangles as faces, with
AB=CD=p,
AC=BD=q,
AD=BC=r,
and p²+q²=r².
What's its volume, as a function of p, q and r?
The required volume is zero, since D lies in the same plane as A, B, and C.
Edited on February 19, 2024, 1:47 am