St Maria in Cosmedin, Rome

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 60°.
• Contains four equilateral triangles.
• Contains one regular hexagon.
• The tiling satisfies the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 291 polygons.

1. Page 76 (middle left) (St Maria in Cosmedin, Rome, Italy. Mosaic floor, 6th-12th centuries) of F M Hessemer. Historic Designs and Patterns in Color, Dover, a1840. ISBN 048626425. [hessemer] {This collection is unusual in giving the source for almost all the patterns.} Available on Internet.

v54