Truncated square trapezohedron
| Truncated square trapezohedron | |
|---|---|
| Type | Truncated trapezohedron Johnson solid dual | 
| Faces | 8 pentagons, 2 squares | 
| Edges | 24 | 
| Vertices | 16 | 
| Symmetry group | D4d, [2+,8], (2*4) | 
| Dual polyhedron | Gyroelongated square bipyramid (J17) | 
| Properties | convex | 
In geometry, the square truncated trapezohedron is the second in an infinite series of truncated trapezohedra. It has 8 pentagon and 2 square faces.
This polyhedron can be constructed by taking a tetragonal trapezohedron and truncating the polar axis vertices. The kite faces of the trapezohedron become pentagons.
The vertices exist as 4 squares in four parallel planes, with alternating orientation in the middle creating the pentagons.
A truncated trapezohedron has all valence-3 vertices. This means that the dual polyhedron, the gyroelongated square dipyramid, has all triangular faces.
It represents the dual polyhedron to the Johnson solid, gyroelongated square dipyramid (J17), with specific proportions:
| Square truncated trapezohedron | Net | 
|---|---|