Gyroelongated square pyramid

In geometry, the gyroelongated square pyramid is the Johnson solid that can be constructed by attaching an equilateral square pyramid to a square antiprism. It occurs in the chemistry such as square antiprismatic molecular geometry.

Gyroelongated square pyramid
Type	Johnson J9 – J10 – J11
Faces	12 triangles 1 square
Edges	20
Vertices	9
Vertex configuration	${\displaystyle 1\times 3^{4}+4\times 3^{3}\times 4+4\times 3^{5}}$
Symmetry group	${\displaystyle C_{4v}}$
Properties	convex
Net