Elongated pentagonal gyrobirotunda

Elongated pentagonal gyrobirotunda

Infobox Polyhedron


Polyhedron_Type=Johnson
J42 - J43 - J44
Face_List=2310 triangles
10 squares
2+10 pentagons
Edge_Count=80
Vertex_Count=40
Symmetry_Group="D"5d
Vertex_List=20(3.42.5)
2.10(3.5.3.5)
Dual=-
Property_List=convex

In geometry, the elongated pentagonal gyrobirotunda is one of the Johnson solids ("J"43). As the name suggests, it can be constructed by elongating a "pentagonal gyrobirotunda," or icosidodecahedron (one of the Archimedean solids), by inserting a decagonal prism between its congruent halves. Rotating one of the pentagonal rotundae ("J"6) through 36 degrees before inserting the prism yields an elongated pentagonal orthobirotunda ("J"42).

The 92 Johnson solids were named and described by Norman Johnson in 1966.

External links

* [http://mathworld.wolfram.com/JohnsonSolid.html Johnson Solid -- from MathWorld]


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Elongated pentagonal orthobirotunda — Infobox Polyhedron Polyhedron Type=Johnson J41 J42 J43 Face List=2.10 triangles 2.5 squares 2+10 pentagons Edge Count=80 Vertex Count=40 Symmetry Group= D 5h Vertex List=20(3.42.5) 2.10(3.5.3.5) Dual= Property List=convexIn geometry, the… …   Wikipedia

  • Girobirrotonda pentagonal elongada — Imágen del sólido Tipo Johnson J42 J43 J44 …   Wikipedia Español

  • Johnson solid — The elongated square gyrobicupola (J37), a Johnson solid …   Wikipedia

  • Birotunda — In geometry, a birotunda is the name for several different polyhedra, formed from two rotundas adjoined through their common regular decagon faces. In an orthobirotunda , one of the two rotundas is placed as the mirror reflection of the other,… …   Wikipedia

  • Sólido de Johnson — La girobicúpula cuadrada elongada (J37), un sólido de Johnson …   Wikipedia Español

  • Polyèdre de Johnson — Solide de Johnson La gyrobicoupole octogonale allongée (J37), un solide de Johnson …   Wikipédia en Français

  • Polyèdres de Johnson — Solide de Johnson La gyrobicoupole octogonale allongée (J37), un solide de Johnson …   Wikipédia en Français

  • Solide de Johnson — La gyrobicoupole octogonale allongée (J37), un solide de Johnson …   Wikipédia en Français

  • Solide de johnson — La gyrobicoupole octogonale allongée (J37), un solide de Johnson …   Wikipédia en Français

  • Johnson-Körper — Die Johnson Körper sind eine Klasse geometrischer Körper. Inhaltsverzeichnis 1 Eigenschaften 2 Liste 2.1 Pyramiden, Kuppeln und Rotunden 2.2 modifizierte Pyramiden …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”