Gyroelongated square cupola
In geometry, the gyroelongated square cupola is one of the Johnson solids ("J"). As the name suggests, it can be constructed by gyroelongating a square cupola ("J") by attaching an octagonal antiprism to its base. It can also be seen as a gyroelongated square bicupola ("J") with one square bicupola removed. Dual polyhedron. The dual of the gyroelongated square cupola has 20 faces: 8 kites, 4 rhombi, and 8 pentagons.