Triangular cupola
| Triangular cupola | |
|---|---|
 |
|
| Type |
Johnson J2 - J3 - J4 |
| Faces | 1+3 triangles 3 squares 1 hexagon |
| Edges | 15 |
| Vertices | 9 |
| Vertex configuration | 6(3.4.6) 3(3.4.3.4) |
| Symmetry group | C3v |
| Dual polyhedron | - |
| Properties | convex |
| Net | |
 |
|
In geometry, the triangular cupola is one of the Johnson solids (J3). It can be seen as half a cuboctahedron.
A Johnson solid is one of 92 strictly convex polyhedra that have regular faces but are not uniform (that is, they are not Platonic solids, Archimedean solids, prisms or antiprisms). They were named by Norman Johnson, who first listed these polyhedra in 1966.
The following formulae for the volume and surface area can be used if all faces are regular, with edge length a:
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Wikipedia