FACTOID # 85: The average woman in New Zealand doesn't give birth until she is nearly 30 years old.
 
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Encyclopedia > Bipyramid

A bipyramid is a polyhedron formed by joining two identical pyramids base-to-base. The bipyramids are the dual polyhedra of the prisms. Three bipyramids can be made out of all regular triangles, the octahedron (square bipyramid), which counts among the Platonic solids, and the triangular and pentagonal bipyramids, which count among the Johnson solids.


External links

  • The Uniform Polyhedra (http://www.mathconsult.ch/showroom/unipoly/)
  • Virtual Reality Polyhedra (http://www.georgehart.com/virtual-polyhedra/vp.html) The Encyclopedia of Polyhedra





  Results from FactBites:
 
Polytopes Built of Congruent Bipyramids. Part 1. (525 words)
Bipyramid is a polyhedron formed of two congruent pyramids glued face-to-face, where this faces are the bases of these pyramids.
For the case W is a 5-cells regular polytope we’ll receive a polytope with 10 cells.
There are two more examples of polytopes built of bipyramids on the page of ‘Literka’ Polytopes Built of Bipyramids.
Bipyramid (53 words)
A bipyramid is a polyhedron formed by joining two identical pyramids base-to-base.
The bipyramids are the dual polyhedra of the prisms.
Three bipyramids can be made out of all regular triangles, the octahedron (square bipyramid), which counts among the Platonic solids, and the triangular and pentagonal bipyramids, which count among the Johnson solids.
  More results at FactBites »


 

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