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
Octahemioctahedron 3 3 6..6.3OhC37W068U03K081224120Yes 8+4
Tetrahemihexahedron 3 2 4..4.3TdC36W067U04K0961271No 4+3
Cubohemioctahedron 4 3 6..6.4OhC51W078U15K20122410−2No 6+4
Great dodecahedron 2 5 /2IhC44W021U35K40123012−6Yes312
Great icosahedron 2 3 /2IhC69W041U53K581230202Yes720
Great ditrigonal icosidodecahedron 3 5 /2IhC61W087U47K52206032−8Yes620+12
Small rhombihexahedron2 4 4.8..OhC60W086U18K23244818−6No 12+6
Small cubicuboctahedron 4 4 8..8.4OhC38W069U13K18244820−4Yes28+6+6
Nonconvex great rhombicuboctahedron 4 2 4..4.4OhC59W085U17K222448262Yes58+
Small dodecahemidodecahedron 5 5 10..10.5IhC65W091U51K56306018−12No 12+6
Great dodecahemicosahedron 5 3 6..6.5IhC81W102U65K70306022−8No 12+10
Small icosihemidodecahedron 3 5 10..10.3IhC63W089U49K54306026−4No 20+6
Small dodecicosahedron3 5 10.6..IhC64W090U50K556012032−28No 20+12
Small rhombidodecahedron2 5 10.4..IhC46W074U39K446012042−18No 30+12
Small dodecicosidodecahedron 5 5 10..10.5IhC42W072U33K386012044−16Yes220+12+12
Rhombicosahedron2 3 6.4..IhC72W096U56K616012050−10No 30+20
Great icosicosidodecahedron 5 3 6..6.5IhC62W088U48K536012052−8Yes620+12+20
Pentagrammic prism2 2.4.4D5hC33bU78aK03a101572Yes25+2
Heptagrammic prism 2 2.4.4D7hC33dU78bK03b142192Yes27+2
Heptagrammic prism 2 2.4.4D7hC33dU78cK03c142192Yes37+2
Octagrammic prism2 2.4.4D8hC33eU78dK03d1624102Yes38+2
Pentagrammic antiprism 2 2 .3.3.3D5hC34bU79aK04a1020122Yes210+2
Pentagrammic crossed-antiprism 2 2 .3.3.3D5dC35aU80aK05a1020122Yes310+2
Heptagrammic antiprism 2 2 .3.3.3D7hC34dU79bK04b1428162Yes314+2
Heptagrammic antiprism 2 2 .3.3.3D7dC34dU79cK04c1428162Yes314+2
Heptagrammic crossed-antiprism 2 2 .3.3.3D7hC35bU80bK05b1428162Yes414+2
Octagrammic antiprism 2 2 .3.3.3D8dC34eU79dK04d1632182Yes316+2
Octagrammic crossed-antiprism 2 2 .3.3.3D8dC35cU80cK05c1632182Yes516+2
Small stellated dodecahedron5 2 5IhC43W020U34K39123012−6Yes312
Great stellated dodecahedron3 2 3IhC68W022U52K572030122Yes712
Ditrigonal dodecadodecahedron3 5 3IhC53W080U41K46206024−16Yes412+12
Small ditrigonal icosidodecahedron3 3 3IhC39W070U30K35206032−8Yes220+12
Stellated truncated hexahedron2 3 ..3OhC66W092U19K242436142Yes78+6
Great rhombihexahedron2 4...OhC82W103U21K26244818−6No 12+6
Great cubicuboctahedron3 4 .3..4OhC50W077U14K19244820−4Yes48+6+6
Great dodecahemidodecahedron ...IhC86W107U70K75306018−12No 12+6
Small dodecahemicosahedron 3 6..6.IhC78W100U62K67306022−8No 12+10
Dodecadodecahedron2 5 2IhC45W073U36K41306024−6Yes312+12
Great icosihemidodecahedron 3 ...3IhC85W106U71K76306026−4No 20+6
Great icosidodecahedron2 3 2IhC70W094U54K593060322Yes720+12
Cubitruncated cuboctahedron 3 4 .6.8OhC52W079U16K21487220−4Yes48+6+6
Great truncated cuboctahedron 2 3 .4.OhC67W093U20K254872262Yes112+8+6
Truncated great dodecahedron2 5 10.10.IhC47W075U37K42609024−6Yes312+12
Small stellated truncated dodecahedron2 5 ..5IhC74W097U58K63609024−6Yes912+12
Great stellated truncated dodecahedron2 3 ..3IhC83W104U66K716090322Yes1320+12
Truncated great icosahedron2 3 6.6.IhC71W095U55K606090322Yes712+20
Great dodecicosahedron3 6...IhC79W101U63K686012032−28No 20+12
Great rhombidodecahedron2 4...IhC89W109U73K786012042−18No 30+12
Icosidodecadodecahedron 5 3 6..6.5IhC56W083U44K496012044−16Yes412+12+20
Small ditrigonal dodecicosidodecahedron 3 5 10..10.3IhC55W082U43K486012044−16Yes420+12+12
Great ditrigonal dodecicosidodecahedron3 5 .3..5IhC54W081U42K476012044−16Yes420+12+12
Great dodecicosidodecahedron 3 ...3IhC77W099U61K666012044−16Yes1020+12+12
Small icosicosidodecahedron 3 3 6..6.3IhC40W071U31K366012052−8Yes220+12+20
Rhombidodecadodecahedron 5 2 4..4.5IhC48W076U38K436012054−6Yes330+12+12
Nonconvex great rhombicosidodecahedron 3 2 4..4.3IhC84W105U67K7260120622Yes1320+30+12
Icositruncated dodecadodecahedron3 5 .6.10IhC57W084U45K5012018044−16Yes420+12+12
Truncated dodecadodecahedron2 5 .4.IhC75W098U59K6412018054−6Yes330+12+12
Great truncated icosidodecahedron2 3 .4.6IhC87W108U68K73120180622Yes1330+20+12
Snub dodecadodecahedron 2 5 3.3..3.5IC49W111U40K456015084−6Yes360+12+12
Inverted snub dodecadodecahedron 2 5 3..3.3.5IC76W114U60K656015084−6Yes960+12+12
Great snub icosidodecahedron 2 3 34.IC73W113U57K6260150922Yes7+12
Great inverted snub icosidodecahedron 2 3 34.IC88W116U69K7460150922Yes13+12
Great retrosnub icosidodecahedron 2 /2IC90W117U74K7960150922Yes37+12
Great snub dodecicosidodecahedron 3 33..3.IC80W115U64K6960180104−16Yes10+
Snub icosidodecadodecahedron 3 5 33.5.3.IC58W112U46K5160180104−16Yes4+12+12
Small snub icosicosidodecahedron 3 3 35.IhC41W110U32K3760180112−8Yes2+12
Small retrosnub icosicosidodecahedron /2IhC91W118U72K7760180112−8Yes38+12
Great dirhombicosidodecahedron 3 /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.