| Elongated square cupola | |
|---|---|
 | |
| Type | Johnson J18 – J19 – J20 |
| Faces | 4 triangles 13 squares 1 octagon |
| Edges | 36 |
| Vertices | 20 |
| Vertex configuration | 8(42.8) 4+8(3.43) |
| Symmetry group | C4v |
| Dual polyhedron | - |
| Properties | convex |
| Net | |
 | |
In geometry, the elongated square cupola is a polyhedron constructed from an octagonal prism by attaching square cupola onto its base. It is an example of Johnson solid.