Gyroelongated square pyramid
- Gyroelongated square pyramid
Infobox_Polyhedron
Polyhedron_Type=Johnson
J9 - J10 - J11
Face_List=3.4 triangles
1 square
Edge_Count=20
Vertex_Count=9
Symmetry_Group="C"4v
Vertex_List=1(34)
4(33.4)
4(35)
Dual=-
Property_List=convex
In geometry, the gyroelongated square pyramid is one of the Johnson solids ("J"10). As its name suggests, it can be constructed by taking a square pyramid and "gyroelongating" it, which in this case involves joining a square antiprism to its base.
The 92 Johnson solids were named and described by Norman Johnson in 1966.
External links
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* [http://www.lifeisastoryproblem.org/explore/net_gyroelong_sqr_pyramid.pdf Printable Geometric Net of a Gyroelongated Square Pyramid] [http://www.lifeisastoryproblem.org Life is a Story Problem.org]
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