Rahul Sharma (Editor)

Triaugmented dodecahedron

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Edges
  
45

Vertex configuration
  
2+3(5) 3+2.6(3.5) 3(3)

Vertices
  
23

Symmetry group
  
C3v

Triaugmented dodecahedron

Type
  
Johnson J60 - J61 - J62

Faces
  
3+2×6 triangles 3×3 pentagons

In geometry, the triaugmented dodecahedron is one of the Johnson solids (J61). It can be seen as a dodecahedron with three pentagonal pyramids (J2) attached to nonadjacent faces.

A Johnson solid is one of 92 strictly convex polyhedra that have regular faces but are not uniform (that is, they are not Platonic solids, Archimedean solids, prisms or antiprisms). They were named by Norman Johnson, who first listed these polyhedra in 1966.

References

Triaugmented dodecahedron Wikipedia