The figure shown and described here is **not** a regular map.
Some of its Petrie polygons have three edges, some have four.

This non-regular map has one 18-gonal face, six vertices, and nine edges.

Its rotational symmetry group is D6.

Its dual is C^{1}:{18,3}.

**Its Petrie dual is the triangular prism.**

This non-regular map has a face which shares an edge with itself. You may threfore consider that it does not qualify as an irregular map.

Other regular maps on the C^{4} non-oriented surface.

Index to other pages on regular maps.

Some pages on groups

Copyright N.S.Wedd 2009