| Truncated triakis octahedron | |
|---|---|
|   | |
| Conway notation | t8kO = dk8tC | 
| Faces | 6 octagons 24 pentagons | 
| Edges | 84 | 
| Vertices | 56 | 
| Dual | Octakis truncated cube | 
| Vertex configuration | 8 (5.5.5) 48 (5.5.8) | 
| Symmetry group | Oh | 
| Properties | convex | 
|   Net | |
The truncated triakis octahedron, or more precisely an order-8 truncated triakis octahedron , is a convex polyhedron with 30 faces: 8 sets of 3 pentagons arranged in an octahedral arrangement, with 6 octagons in the gaps.
It is constructed from a triakis octahedron by truncating the order-8 vertices. This creates 6 regular octagon faces, and leaves 24 mirror-symmetric pentagons.
|   Triakis octahedron | 
The dual of the order-8 truncated triakis octahedron is called a octakis truncated cube. It can be seen as a truncated cube with octagonal pyramids augmented to the faces.
|   Truncated cube |   Octakis truncated cube |   Net | 
The DaYan Gem 6 is a twisty puzzle in this shape. [1]