Elongated pentagonal cupola
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| Elongated pentagonal cupola | |
|---|---|
 |
|
| Type | Johnson J19 - J20 - J21 |
| Faces | 5 triangles 3.5 squares 1 pentagon 1 decagon |
| Edges | 45 |
| Vertices | 25 |
| Vertex configuration | 10(42.10) 10(3.43) 5(3.4.5.4) |
| Symmetry group | C5v |
| Dual | - |
| Properties | convex |
In geometry, the elongated pentagonal cupola is one of the Johnson solids (J20). As the name suggests, it can be constructed by elongating a pentagonal cupola (J5) by attaching a decagonal prism to its base. The solid can also be seen as an elongated pentagonal orthobicupola (J38) with its "lid" (another pentagonal cupola) removed.
The 92 Johnson solids were named and described by Norman Johnson in 1966.
[edit] External links
- Eric W. Weisstein, Johnson solid at MathWorld.
- Eric W. Weisstein, Elongated pentagonal cupola at MathWorld.
