Tridiminished icosahedron

In geometry, the tridiminished icosahedron is a Johnson solid that is constructed by removing three pentagonal pyramids from a regular icosahedron.

Tridiminished icosahedron

Type	Johnson $J 62 - J 63 - J 64$
Faces	5 triangles 3 pentagons
Edges	15
Vertices	9
Vertex configuration	$2\times 3\times (3\times 5^{2})+3\times (3^{3}\times 5)$
Symmetry group	$C_{3\mathrm {v} }$
Properties	convex, non-composite
Net