| Square bifrustum | |
|---|---|
 | |
| Type | Bifrustum |
| Faces | 8 trapezoids 2 squares |
| Edges | 20 |
| Vertices | 12 |
| Symmetry group | D4h |
| Dual polyhedron | Elongated square bipyramid |
| Properties | Convex |
| Net | |
 | |
In geometry, the square bifrustum or square truncated bipyramid is the second in an infinite series of bifrustum polyhedra. It has 4 trapezoidal and 2 square faces.
This polyhedron can be constructed by taking a square bipyramid (octahedron) and truncating the polar axis vertices, making it into two end-to-end frustums.
It is dual to the elongated square dipyramid.
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