Compound of ten tetrahedra
The compound of ten tetrahedra is one of the five regular polyhedral compounds. This polyhedron can be seen as either a stellation of the icosahedron or a compound. This compound was first described by Edmund Hess in 1876.
It can be seen as a... Wikipedia
Dual compound: Self-dual
Elements (As a compound): 10 tetrahedra: F = 40, E = 60, V = 20
Index: UC6, W25
Symmetry group: icosahedral (Ih)