Elongated pentagonal pyramid
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| Elongated pentagonal pyramid | |
|---|---|
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| Type | Johnson J8 - J9 - J10 |
| Faces | 5 triangles 5 squares 1 pentagon |
| Edges | 20 |
| Vertices | 11 |
| Vertex configuration | 5(42.5) 5(32.42) |
| Symmetry group | C5v, [5], (*55) |
| Rotation group | C5, [5]+, (55) |
| Dual polyhedron | self |
| Properties | convex |
| Net | |
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In geometry, the elongated pentagonal pyramid is one of the Johnson solids (J9). As the name suggests, it can be constructed by elongating a pentagonal pyramid (J2) by attaching a pentagonal prism to its base.
The 92 Johnson solids were named and described by Norman Johnson in 1966.
Dual polyhedron
The dual of the elongated pentagonal pyramid has 11 faces: 5 triangular, 1 pentagonal and 5 trapezoidal.
| Dual elongated pentagonal pyramid | Net of dual |
|---|---|
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