Given a regular tetrahedron of unit volume, the mean triangle area of a triangle picked at random inside it is approximately , and the variance is .

# Tetrahedron Triangle Picking

## See also

Tetrahedron Line Picking, Tetrahedron Tetrahedron Picking## Explore with Wolfram|Alpha

## Cite this as:

Weisstein, Eric W. "Tetrahedron Triangle Picking."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/TetrahedronTrianglePicking.html