Gyrobifastigium
| Gyrobifastigium | |
|---|---|
| Missing image Gyrobifastigium.png Gyrobifastigium | |
| Type | Johnson J25 - J26 - J27 |
| Faces | 4 triangles 4 squares |
| Edges | 14 |
| Vertices | 8 |
| Vertex configuration | 4 of 3.42 4 of 3.4.3.4 |
| Symmetry group | D2d |
| Dual polyhedron | - |
| Properties | convex |
In geometry, the gyrobifastigium is one of the Johnson solids (J26). It can be constructed by joining two face-regular triangular prisms along corresponding square faces, giving a half-turn to one prism.
The 92 Johnson solids were named and described by Norman Johnson in 1966.