Jamali Yusuf mosque, Cairo

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 22.5°.
• Contains two regular 8-pointed star polygons with vertex angle of 45°.
• Contains one regular 16-pointed star polygon with vertex angle of 45°.
• There are 11 non-regular reflective tiles (including 2 kites).
• The tiling satisfies the interlace condition and has two finite interlaces and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 487 polygons.

1. Thesaurus Islamicus, F5697 (Zayn al-Din Yusuf, Cairo, Egypt. Qibla wall, window on north end) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1446AD, 849AH)

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