Mathematical Model – Non-regular Decagon

Coxeter Collection · Mathematics

Accession Number: 2016.mat.4

Instrument Name:

Mathematical Model – Non-regular Decagon


A very elaborate and colourful paper model.

Primary Materials: Cardboard

Function: Sculpture, Pedagogical

Condition: Excellent

Manufacturer: Unknown

Date of Manufacture: Unknown


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:

“Ten faces, not turned of twelve but twenty-four, because each star-pentagon has another one crossing it, but not in the symmetrical fashion. They’re at a peculiar angle to each other and the corners of the pairs of pentagrams do not form a regular decagon.” H.S.M. Coxeter. Dec. 23, 1999

Donated to UTSIC: No