Mashhad of Sayyida Ruqayya

• The symmetry group of the tiling is 632 (p6).
• All the internal angles of the constituent polygons are a multiple of 60°.
• Contains one regular two-pointed star polygon with vertex angle of 60°.
• There are no non-regular reflective pairs and one tile with no mirror image.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 148 polygons.

1. Vol1, Plate 86c (Sayyida Ruqayya, Cairo, Egypt. Two right-hand windows) of K A C Creswell. The Muslim Architecture of Egypt, Oxford, 2 volumes, 1952/59. [creswell] {}(1133AD, 527AH)

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