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Mathematical Model – Small Stellated Dodecahedron

Coxeter · Mathematics

A colourful mathematical model of cardboard in the form of a small dodecahedron. Each face in the same plane is given a distinct colour.

The model features a small brass ring which permits it to be hung from a string.

Accession Number: 2016.mat.21

Alternative Name:

Primary Materials: cardboard


This model is marked with the number “12” in black pen.

Dimensions (cm): Longest dimension = 20 cm

Function: Pedagogical mathematical model.


Very Good: The model has some small points of damage and punctures.

Associated Instruments:

Manufacturer: Unknown

Date of Manufacture: c. 1960


These models existed at the Dept. of Mathematics during the tenure of Dr. H.S.M. Coxeter, who provided the comments below

Additional Information and References:

Historical Notes:

“This is the small stellated dodecahedron. You get it by taking a dodecahedron and extending its faces until the planes meet again. Cut the pyramid off, and you have one face of the dodecahedron, or, see it as a dodecahedron with pyramids stuck on to the faces.” H.S.M.Coxeter, March 10, 2000