Augmented tridiminished icosahedron
# Augmented tridiminished icosahedron

In geometry, the augmented tridiminished icosahedron is one of the Johnson solids $(J_{64}).$ It can be obtained by joining a tetrahedron to another Johnson solid, the tridiminished icosahedron $(J_{63}).$

A Johnson solid is one of 92 strictly convex polyhedra that is composed of regular polygon faces but are not uniform polyhedra (that is, they are not Platonic solids, Archimedean solids, prisms, or antiprisms). They were named by Norman Johnson, who first listed these polyhedra in 1966.

