In geometry, the augmented triangular prism is one of the Johnson solids (J49). As the name suggests, it can be constructed by augmenting a triangular prism by attaching a square pyramid (J1) to one of its equatorial faces. The resulting solid bears a superficial resemblance to the gyrobifastigium (J26), the difference being that the latter is constructed by attaching a second triangular prism, rather than a square pyramid.
| Augmented triangular prism | |
|---|---|
 | |
| Type | Johnson J48 - J49 - J50 |
| Faces | 3.2 triangles 2 squares |
| Edges | 13 |
| Vertices | 7 |
| Vertex configuration | 2(3.42) 1(34) 4(33.4) |
| Symmetry group | C2v |
| Dual polyhedron | - |
| Properties | convex |
The 92 Johnson solids were named and described by Norman Johnson in 1966.
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