Elongated square pyramid

Infobox_Polyhedron with net


Polyhedron_Type=Johnson
J₇ - J₈ - J₉
Face_List=4 triangles
1+4 squares
Edge_Count=16
Vertex_Count=9
Symmetry_Group="C"_4v
Vertex_List=4(4³)
1(3⁴)
4(3².4²)
Dual=self
Property_List=

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In geometry, the elongated square pyramid is one of the Johnson solids ("J"₈). As the name suggests, it can be constructed by elongating a square pyramid ("J"₁) by attaching a cube to its square base. Like any elongated pyramid, it is self-dual.

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_elong_sqr_pyramid.pdf Printable Geometric Net of an Elongated Square Pyramid] [http://www.lifeisastoryproblem.org Life is a Story Problem.org]