al-Ashraf Barsbay, Cairo

• The symmetry group of the tiling is 22* (pmg).
• All the internal angles of the constituent polygons are a multiple of 30°.
• There is one non-regular reflective tile and four tiles with no mirror image.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 271 polygons.

1. Photo via Mirek Majewski (al-Ashraf Barsbay, Cairo, Egypt) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

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