Triangular cupola

In geometry, the triangular cupola is the cupola with hexagon as its base and triangle as its top. If the edges are equal in length, the triangular cupola is the Johnson solid. It can be seen as half a cuboctahedron. Many polyhedrons can be constructed involving the attachment of the base of a triangular cupola.

Triangular cupola
Type	Johnson J2 – J3 – J4
Faces	4 triangles 3 squares 1 hexagon
Edges	15
Vertices	9
Vertex configuration	${\displaystyle {\begin{aligned}&6\times (3\times 4\times 6)\,+\\&3\times (3\times 4\times 3\times 4)\end{aligned}}}$
Symmetry group	${\displaystyle C_{3v}}$
Properties	convex
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