Ditrigonal dodecadodecahedron
In geometry, the ditrigonal dodecadodecahedron is a nonconvex uniform polyhedron, indexed as U41. It has extended Schläfli symbol b{5,5/2}, as a blended great dodecahedron, and Coxeter diagram 
. It has 4 Schwarz triangle equivalent constructions, for example Wythoff symbol 3 | 5/3 5, and Coxeter diagram 
.
Its convex hull is a regular dodecahedron. It additionally shares its edge arrangement with the small ditrigonal icosidodecahedron (having the pentagrammic faces in common), the great ditrigonal icosidodecahedron (having the pentagonal faces in common), and the regular compound of five cubes.
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