| Augmented sphenocorona | |
|---|---|
| Type | Johnson J86 - J87 - J88 |
| Faces | 4+6x2 triangles 1 square |
| Edges | 26 |
| Vertices | 11 |
| Vertex configuration | 1(34) 2(33.4) 3x2(35) 2(34.4) |
| Symmetry group | Cs |
| Dual polyhedron | - |
| Properties | convex |
| Net | |
In geometry, the augmented sphenocorona is one of the Johnson solids (J87), and is obtained by adding a square pyramid to one of the square faces of the sphenocorona. It is the only Johnson solid arising from "cut and paste" manipulations where the components are not all sections of Platonic and Archimedean solids.
The 92 Johnson solids were named and described by Norman Johnson in 1966.