| Augmented dodecahedron | |
|---|---|
| Type | Johnson J57 - J58 - J59 |
| Faces | 5 triangles 11 pentagons |
| Edges | 35 |
| Vertices | 21 |
| Vertex configuration | 3.5(53) 5(32.52) 1(35) |
| Symmetry group | C5v |
| Dual polyhedron | - |
| Properties | convex |
| Net | |
In geometry, the augmented dodecahedron is one of the Johnson solids (J58), consisting of a dodecahedron with a pentagonal pyramid attached to one of the faces. When two or three such pyramids are attached, the result may be a parabiaugmented dodecahedron, a metabiaugmented dodecahedron or a triaugmented dodecahedron.
The 92 Johnson solids were named and described by Norman Johnson in 1966.