Cairo

• The symmetry group of the tiling is 22* (pmg).
• All the internal angles of the constituent polygons are a multiple of 45°.
• There is one non-regular reflective tile.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 201 polygons.

1. From Mirek Majewski, page 8 (Cairo, Egypt) of Prisse d'Avennes. Arabic Art in Color, Dover, 1877. ISBN 048623658. [d-avennes] {Contains 25 geometric patterns in colour, and gives the source in most cases more on the Internet.} Fuller version available on Internet.

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