Elongated gyrobifastigium
| Elongated gyrobifastigium Gabled rhombohedron | |
|---|---|
| Type | Stereohedron | 
| Faces | 4 rectangles 4 irregular pentagons | 
| Edges | 18 | 
| Vertices | 12 | 
| Vertex configuration | (4) 4.4.5 (8) 4.5.5 | 
| Symmetry group | D2d, [2+,4], (2*2), order 8 | 
| Rotation group | D2, [2,2]+, (222), order 4 | 
| Dual polyhedron | Snub disphenoid | 
| Properties | convex, space-filling | 
| Net | |
In geometry, the elongated gyrobifastigium or gabled rhombohedron is a space-filling octahedron with 4 rectangles and 4 right-angled pentagonal faces.