Polyhedron made by joining two identical frusta at their bases
Family of bifrusta
Example: hexagonal bifrustum
Faces
2n-gons 2n trapezoids
Edges
5n
Vertices
3n
Symmetry group
Dnh, [n,2], (*n22)
Surface area
Volume
Dual polyhedron
Elongated bipyramids
Properties
convex
In geometry, an n-agonal bifrustum is a polyhedron composed of three parallel planes of n-agons, with the middle plane largest and usually the top and bottom congruent.
It can be constructed as two congruent frusta combined across a plane of symmetry, and also as a bipyramid with the two polar vertices truncated.[1]
They are duals to the family of elongated bipyramids.
In geometry, an n-agonal bifrustum is a polyhedron composed of three parallel planes of n-agons, with the middle plane largest and usually the top and...
In geometry, the pentagonal bifrustum or truncated pentagonal bipyramid is the third in an infinite series of bifrustum polyhedra. It has 10 trapezoidal...
In geometry, the triangular bifrustum is the second in an infinite series of bifrustum polyhedra. It has 6 trapezoid and 2 triangle faces. It may also...
The hexagonal bifrustum or truncated hexagonal bipyramid is the fourth in an infinite series of bifrustum polyhedra. It has 12 trapezoid and 2 hexagonal...
be irregular. The dual of this solid is the Gyroelongated pentagonal bifrustum. A Johnson solid is one of 92 strictly convex polyhedra that is composed...
symmetry family. Truncation of two opposite vertices results in a square bifrustum. The octahedron can be generated as the case of a 3D superellipsoid with...
polyhedra in 1966. The dual of the elongated square bipyramid is a pentagonal bifrustum. Elongated pentagonal pyramid Weisstein, Eric W., "Elongated pentagonal...
frusta with two congruent bases joined at these congruent bases make a bifrustum. The formula for the volume of a pyramidal square frustum was introduced...
horizontal plane. The elongated square bipyramid is dual to the square bifrustum, which has eight trapezoidals and two squares. A special kind of elongated...
of clathrate hydrate (see illustration, next to label 51262) Hexagonal bifrustum (12 trapezoids, 2 hexagons) The British £1 coin in circulation from 2017...
The dual of the elongated triangular bipyramid is called a triangular bifrustum and has 8 faces: 6 trapezoidal and 2 triangular. Johnson, Norman W. (1966)...
nested triangles graph with three triangles is the graph of the triangular bifrustum. More generally, because the nested triangles graphs are planar and 3-vertex-connected...
assembly. The shield-tamper ensemble can be visualized as a circular bifrustum. All parts of the tamper were similarly locked together to provide structural...
(regular octahedra and triangular antiprisms). The vertex figure is a square bifrustum. The dual is composed of elongated square bipyramids. Dual cell The truncated...
Global Information
![{\displaystyle {\begin{aligned}&n(a+b){\sqrt {\left({\tfrac {a-b}{2}}\cot {\tfrac {\pi }{n}}\right)^{2}+h^{2}}}\\[2pt]&\ \ +\ n{\frac {b^{2}}{2\tan {\frac {\pi }{n}}}}\end{aligned}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/e364289c03051f938a6b90a69d22d4fffa89658d)
