File:Icosahedron.png · Wikimedia Commons · See Wikimedia Commons
icosahedron
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In geometry, an icosahedron ( or ) is a polyhedron with 20 faces. The name comes . The plural can be either "icosahedra" () or "icosahedrons".
In the Vinony graph
Within Vinony's link graph, icosahedron is referenced by 665 other articles, and connects out to tetrahedral symmetry, polyhedron and disdyakis dodecahedron.
It sits within the topics Geodesic polyhedra and Individual graphs.
Its subject is documented across 51 Wikipedia language editions.
Wikidata facts
- Subclass of
- polyhedron
- Follows
- enneadecahedron
- Image
- Plato-20.png
- Has parts of class
- face
Show 7 more facts
- different from
- regular icosahedron
- maintained by WikiProject
- WikiProject Mathematics
- Commons category
- Icosahedron
- has facet polytope
- polygon
- Commons gallery
- Icosahedron
- studied by
- solid geometry
- described by source
- Encyclopædia Britannica 11th edition
Sources (2)
via Wikidata · CC0
~6 min read
Encyclopedic overview
5 sectionsContents
- Regular icosahedra
- Pyritohedral icosahedra
- Other icosahedra
- See also
- References
In geometry, an icosahedron ( or ) is a polyhedron with 20 faces. The name comes . The plural can be either "icosahedra" () or "icosahedrons".
There are infinitely many non-similar shapes of icosahedra, some of them being more symmetrical than others. The best known is the (convex, non-stellated) regular icosahedron—one of the Platonic solids—whose faces are 20 equilateral triangles.
Excerpted from Wikipedia’s “icosahedron” article, available under the CC BY-SA 4.0 licence.