Elongated triangular pyramid
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| Elongated triangular pyramid | |
|---|---|
 |
|
| Type | Johnson J6 - J7 - J8 |
| Faces | 4 triangles 3 squares |
| Edges | 12 |
| Vertices | 7 |
| Vertex configuration | 1 of 33 3 of 32.42 3 of 3.42 |
| Symmetry group | C3v |
| Dual | self |
| Properties | convex |
In geometry, the elongated triangular pyramid is one of the Johnson solids (J7). As the name suggests, it can be constructed by elongating a tetrahedron by attaching a triangular prism to its base. Like any elongated pyramid, the resulting solid is self-dual.
The 92 Johnson solids were named and described by Norman Johnson in 1966.
[edit] External links
- Eric W. Weisstein, Elongated triangular pyramid at MathWorld.
- Eric W. Weisstein, Johnson solid at MathWorld.
