| Elongated triangular bipyramid | |
|---|---|
 | |
| Type | Johnson J13 – J14 – J15 |
| Faces | 6 triangles 3 squares |
| Edges | 15 |
| Vertices | 8 |
| Vertex configuration | 2(33) 6(32.42) |
| Symmetry group | D3h, [3,2], (*322) |
| Rotation group | D3, [3,2]+, (322) |
| Dual polyhedron | Triangular bifrustum |
| Properties | convex |
| Net | |
 | |
In geometry, the elongated triangular bipyramid (or dipyramid) or triakis triangular prism a polyhedron constructed from a triangular prism by attaching two tetrahedrons to its bases. It is an example of Johnson solid.