vertices | 8 edges | 12 faces | 8 (8 triangles)

1 (12 edges)

2 sqrt(3)≈3.4641

sqrt(3/2)/2≈0.612372

1/(2 sqrt(2))≈0.353553

1/(2 sqrt(6))≈0.204124

(assuming unit edge length)

two tetrahedra

two tetrahedra

octahedral group

amphichiral | compound | concave | equilateral | rigid