al-Rifa'i mosque, Cairo

• The symmetry group of the tiling is 442 (p4).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains one square.
• Contains one regular octagon.
• 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 137 polygons.

1. Thesaurus Islamicus, F6944 (al-Rifa'i mosque, Cairo, Egypt. West hall, lintel in south wall) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1869-1910AD, 1286-1328AH)

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