| Type: | Polyhedral bipyramid |
| Schläfli: | dt |
| Face List: | 60 Isosceles triangles 12 pentagons |
| Edge Count: | 70 |
| Vertex Count: | 22 |
| Symmetry Group: | [2,5,3], order 240 |
| Dual: | Icosahedral prism |
| Property List: | convex, isochoric |
In 4-dimensional geometry, the dodecahedral bipyramid is the direct sum of a dodecahedron and a segment, Each face of a central dodecahedron is attached with two pentagonal pyramids, creating 24 pentagonal pyramidal cells, 72 isosceles triangular faces, 70 edges, and 22 vertices. A dodecahedral bipyramid can be seen as two dodecahedral pyramids augmented together at their base.
It is the dual of a icosahedral prism.