Snub icosidisdodecahedron (near-miss)

Snub icosidisdodecahedron (near-miss)
Rank	3
Type	Semi-uniform
Elements
Faces	12 pentagons, 60 rectangles, 20 triangles, 12 pentagrams
Edges	210
Vertices	60
Vertex figure	Irregular heptagram
Measures ​
Edge length ratio	$\approx 1.064813827$
Army	Non-uniform Snid
Properties
Symmetry	H3+, order 60
Convex	No
Nature	Tame

This non-convex isogonal polyhedron is a faceting of a deformed compound of five truncated tetrahedra.

This is a near-miss uniform polyhedron that has snub "squares" (rectangles).

It has 2 different edge lengths: 1, ~1.064813827.

This polyhedron is notable for being semi-uniform.

12 pentagons	60 rectangles	20 triangles	12 pentagrams

Its dual is an isohedral heptagrammic hexecontahedron.

Its dual is a isohedral octagrammic hexecontahedron

Dual's face (open to view in full resolution)