| Biaugmented pentagonal prism | |
|---|---|
 | |
| Type | Johnson J52 – J53 – J54 |
| Faces | 8 equilateral triangles 3 squares 2 pentagons |
| Edges | 23 |
| Vertices | 12 |
| Vertex configuration | 2(42.5) 2(34) 2x4(32.4.5) |
| Symmetry group | C2v |
| Properties | convex |
| Net | |
 | |
In geometry, the biaugmented pentagonal prism is a polyhedron constructed from a pentagonal prism by attaching two equilateral square pyramids onto each of its square faces. It is an example of Johnson solid.