Elongated square dipyramid
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| Elongated square dipyramid | |
|---|---|
 |
|
| Type | Johnson J14 - J15 - J16 |
| Faces | 8 triangles 4 squares |
| Edges | 20 |
| Vertices | 10 |
| Vertex configuration | 2(34) 8(32.42) |
| Symmetry group | D4h |
| Dual | Square bifrustum |
| Properties | convex |
In geometry, the elongated square dipyramid is one of the Johnson solids (J15). As the name suggests, it can be constructed by elongating an octahedron by inserting a square prism between its congruent halves.
A zircon crystal is an example of an elongated square dipyramid.
The 92 Johnson solids were named and described by Norman Johnson in 1966.
