List of uniform polyhedra


In geometry, a uniform polyhedron is a polyhedron which has regular polygons as faces and is vertex-transitive. It follows that all vertices are congruent, and the polyhedron has a high degree of reflectional and rotational symmetry.
Uniform polyhedra can be divided between convex forms with convex regular polygon faces and star forms. Star forms have either regular star polygon faces or vertex figures or both.
This list includes these:
It was proven in that there are only 75 uniform polyhedra other than the infinite families of prisms and antiprisms. John Skilling discovered an overlooked [|degenerate] example, by relaxing the condition that only two faces may meet at an edge. This is a degenerate uniform polyhedron rather than a uniform polyhedron, because some pairs of edges coincide.
Not included are:

Indexing

Four numbering schemes for the uniform polyhedra are in common use, distinguished by letters:

Names of polyhedra by number of sides

There are generic geometric names for the most common polyhedra. The 5 Platonic solids are called a tetrahedron, hexahedron, octahedron, dodecahedron and icosahedron with 4, 6, 8, 12, and 20 sides respectively. The regular hexahedron is a cube.

Table of polyhedra

The convex forms are listed in order of degree of vertex configurations from 3 faces/vertex and up, and in increasing sides per face. This ordering allows topological similarities to be shown.
There are infinitely many prisms and antiprisms, one for each regular polygon; the ones up to the 12-gonal cases are listed.

Uniform star polyhedra

The forms containing only convex faces are listed first, followed by the forms with star faces. Again infinitely many prisms and antiprisms exist; they are listed here up to the 8-sided ones.
The uniform polyhedra 3 3,, 3, 3, and have some faces occurring as coplanar pairs.
NameImageWyth symVert. figSym.C#W#U#K#Vert.EdgesFacesChiOrient- able?Dens.Faces by type
Octahemioctahedron60px 3 350px 6..6.3OhC37W068U03K081224120Yes 8+4
Tetrahemihexahedron60px 3 250px 4..4.3TdC36W067U04K0961271No 4+3
Cubohemioctahedron60px 4 350px 6..6.4OhC51W078U15K20122410−2No 6+4
Great dodecahedron60px 2 550px /2IhC44W021U35K40123012−6Yes312
Great icosahedron60px 2 350px /2IhC69W041U53K581230202Yes720
Great ditrigonal icosidodecahedron60px 3 550px /2IhC61W087U47K52206032−8Yes620+12
Small rhombihexahedron60px2 4 50px 4.8..OhC60W086U18K23244818−6No 12+6
Small cubicuboctahedron60px 4 450px 8..8.4OhC38W069U13K18244820−4Yes28+6+6
Nonconvex great rhombicuboctahedron60px 4 250px 4..4.4OhC59W085U17K222448262Yes58+
Small dodecahemidodecahedron60px 5 550px 10..10.5IhC65W091U51K56306018−12No 12+6
Great dodecahemicosahedron60px 5 350px 6..6.5IhC81W102U65K70306022−8No 12+10
Small icosihemidodecahedron60px 3 550px 10..10.3IhC63W089U49K54306026−4No 20+6
Small dodecicosahedron60px3 5 50px 10.6..IhC64W090U50K556012032−28No 20+12
Small rhombidodecahedron60px2 5 50px 10.4..IhC46W074U39K446012042−18No 30+12
Small dodecicosidodecahedron60px 5 550px 10..10.5IhC42W072U33K386012044−16Yes220+12+12
Rhombicosahedron60px2 3 50px 6.4..IhC72W096U56K616012050−10No 30+20
Great icosicosidodecahedron60px 5 350px 6..6.5IhC62W088U48K536012052−8Yes620+12+20
Pentagrammic prismprism.png|60px]2 250px.4.4D5hC33bU78aK03a101572Yes25+2
Heptagrammic prism 60px2 250px.4.4D7hC33dU78bK03b142192Yes27+2
Heptagrammic prism 60px2 250px.4.4D7hC33dU78cK03c142192Yes37+2
Octagrammic prism2 2.4.4D8hC33eU78dK03d1624102Yes38+2
Pentagrammic antiprismImage:Pentagrammic [antiprism.png|60px] 2 2 50px.3.3.3D5hC34bU79aK04a1020122Yes210+2
Pentagrammic crossed-antiprism60px 2 2 Image:Pentagrammic [crossed-antiprism vertfig.png|50px].3.3.3D5dC35aU80aK05a1020122Yes310+2
Heptagrammic antiprism 2 2 50px.3.3.3D7hC34dU79bK04b1428162Yes314+2
Heptagrammic antiprism 2 2 50px.3.3.3D7dC34dU79cK04c1428162Yes314+2
Heptagrammic crossed-antiprism 2 2 50px.3.3.3D7hC35bU80bK05b1428162Yes414+2
Octagrammic antiprism 2 2 50px.3.3.3D8dC34eU79dK04d1632182Yes316+2
Octagrammic crossed-antiprism 2 2 50px.3.3.3D8dC35cU80cK05c1632182Yes516+2
Small stellated dodecahedron60px5 2 50px 5IhC43W020U34K39123012−6Yes312
Great stellated dodecahedron60px3 2 50px 3IhC68W022U52K572030122Yes712
Ditrigonal dodecadodecahedron60px3 550px 3IhC53W080U41K46206024−16Yes412+12
Small ditrigonal icosidodecahedron60px3 350px 3IhC39W070U30K35206032−8Yes220+12
Stellated truncated hexahedronImage:Stellated truncated [hexahedron.png|60px]2 3 50px..3OhC66W092U19K242436142Yes78+6
Great rhombihexahedron60px2 50px 4...OhC82W103U21K26244818−6No 12+6
Great cubicuboctahedron60px3 4 50px.3..4OhC50W077U14K19244820−4Yes48+6+6
Great dodecahemidodecahedron60px 50px...IhC86W107U70K75306018−12No 12+6
Small dodecahemicosahedron60px 350px 6..6.IhC78W100U62K67306022−8No 12+10
Dodecadodecahedron60px2 5 50px 2IhC45W073U36K41306024−6Yes312+12
Great icosihemidodecahedron60px 3 50px...3IhC85W106U71K76306026−4No 20+6
Great icosidodecahedron60px2 3 50px 2IhC70W094U54K593060322Yes720+12
Cubitruncated cuboctahedron60px 3 4 50px.6.8OhC52W079U16K21487220−4Yes48+6+6
Great truncated cuboctahedron60px 2 3 50px.4.OhC67W093U20K254872262Yes112+8+6
Truncated great dodecahedron60px2 550px 10.10.IhC47W075U37K42609024−6Yes312+12
Small stellated truncated dodecahedron60px2 5 50px..5IhC74W097U58K63609024−6Yes912+12
Great stellated truncated dodecahedron60px2 3 50px..3IhC83W104U66K716090322Yes1320+12
Truncated great icosahedron60px2 350px 6.6.IhC71W095U55K606090322Yes712+20
Great dodecicosahedron60px3 50px 6...IhC79W101U63K686012032−28No 20+12
Great rhombidodecahedron60px2 50px 4...IhC89W109U73K786012042−18No 30+12
Icosidodecadodecahedron60px 5 350px 6..6.5IhC56W083U44K496012044−16Yes412+12+20
Small ditrigonal dodecicosidodecahedron60px 3 550px 10..10.3IhC55W082U43K486012044−16Yes420+12+12
Great ditrigonal dodecicosidodecahedron60px3 5 50px.3..5IhC54W081U42K476012044−16Yes420+12+12
Great dodecicosidodecahedron60px 3 50px...3IhC77W099U61K666012044−16Yes1020+12+12
Small icosicosidodecahedron60px 3 350px 6..6.3IhC40W071U31K366012052−8Yes220+12+20
Rhombidodecadodecahedron60px 5 250px 4..4.5IhC48W076U38K436012054−6Yes330+12+12
Nonconvex great rhombicosidodecahedron60px 3 250px 4..4.3IhC84W105U67K7260120622Yes1320+30+12
Icositruncated dodecadodecahedron60px3 5 50px.6.10IhC57W084U45K5012018044−16Yes420+12+12
Truncated dodecadodecahedron60px2 5 50px.4.IhC75W098U59K6412018054−6Yes330+12+12
Great truncated icosidodecahedron60px2 3 50px.4.6IhC87W108U68K73120180622Yes1330+20+12
Snub dodecadodecahedron60px 2 550px 3.3..3.5IC49W111U40K456015084−6Yes360+12+12
Inverted snub dodecadodecahedron60px 2 550px 3..3.3.5IC76W114U60K656015084−6Yes960+12+12
Great snub icosidodecahedron60px 2 350px 34.IC73W113U57K6260150922Yes7+12
Great inverted snub icosidodecahedron60px 2 350px 34.IC88W116U69K7460150922Yes13+12
Great retrosnub icosidodecahedron60px 2 50px /2IC90W117U74K7960150922Yes37+12
Great snub dodecicosidodecahedron60px 350px 33..3.IC80W115U64K6960180104−16Yes10+
Snub icosidodecadodecahedron60px 3 550px 33.5.3.IC58W112U46K5160180104−16Yes4+12+12
Small snub icosicosidodecahedron60px 3 350px 35.IhC41W110U32K3760180112−8Yes2+12
Small retrosnub icosicosidodecahedron60px 50px /2IhC91W118U72K7760180112−8Yes38+12
Great dirhombicosidodecahedron60px 3 50px /2IhC92W119U75K8060240124−56No 40+60+24

Special case

The great disnub dirhombidodecahedron has 240 of its 360 edges coinciding in space in 120 pairs. Because of this edge-degeneracy, it is not always considered to be a uniform polyhedron.

Column key

  • Uniform indexing: U01–U80
  • Kaleido software indexing: K01–K80
  • Magnus Wenninger Polyhedron Models: W001-W119
  • * 1–18: 5 convex regular and 13 convex semiregular
  • * 20–22, 41: 4 non-convex regular
  • * 19–66: Special 48 stellations/compounds
  • * 67–109: 43 non-convex non-snub uniform
  • * 110–119: 10 non-convex snub uniform
  • Chi: the Euler characteristic,. Uniform tilings on the plane correspond to a torus topology, with Euler characteristic of zero.
  • Density: the Density (polytope) represents the number of windings of a polyhedron around its center. This is left blank for non-orientable polyhedra and hemipolyhedra, for which the density is not well-defined.
  • Note on Vertex figure images:
  • * The white polygon lines represent the "vertex figure" polygon. The colored faces are included on the vertex figure images help see their relations. Some of the intersecting faces are drawn visually incorrectly because they are not properly intersected visually to show which portions are in front.