Gyroelongated pentagonal birotunda
| Gyroelongated pentagonal birotunda | |
|---|---|
| Type | Johnson J47 - J48 – J49 |
| Faces | 40 triangles 12 pentagons |
| Edges | 90 |
| Vertices | 40 |
| Vertex configuration | 20 of 34.5 20 of 3.5.3.5 |
| Symmetry group | D10 |
| Dual polyhedron | - |
| Properties | convex, chiral |
In geometry, the Gyroelongated pentagonal birotunda is one of the Johnson solids (J48). It is of a similar construction to other Johnson solids, in particular the Elongated pentagonal orthobirotunda and Elongated pentagonal gyrobirotunda. The difference is that a decagonal antiprism is used in place of the prism, resulting in a twist of 18 degrees between the two pentagonal rotundae.
The 92 Johnson solids were named and described by Norman Johnson in 1966.
External links
Categories: Mathematics stubs | Johnson solids | Chiral polyhedra