In geometry, the dodecadodecahedron is a nonconvex uniform polyhedron, indexed as U36. == Wythoff constructions== It has four Wythoff constructions between four Schwarz triangle families: 2 | 5 5/2, 2 | 5 5/3, 2 | 5/2 5/4, 2 | 5/3 5/4, but represent identical results. Similarly it can be given four extended Schläfli symbols: t1{5/2,5}, t1{5/3,5},...