Mosque of al-Ghuri, Minbar

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 1.87 (π/96)°.
• Contains one regular 8-pointed star polygon with vertex angle of 71.25°.
• Contains one regular 12-pointed star polygon with vertex angle of 71.25°.
• There are 14 non-regular reflective tiles (including 5 kites).
• The tiling satisfies the interlace condition and has four finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 497 polygons.

1. Page 446, Fig. 382b (Princess Asal Bay mosque, Fayyum, Egypt) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1498AD, 903AH)
2. Photo by Ayman Soliman (al-Ghuri, Cairo, Egypt. Minbar, corner of balustrade) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1504AD, 909AH)
3. Vol 2, Figure 224 of Hasan `Abd-al-Wahhab. Tarikh al-masajid al-athariyah, Cairo, 2 vols in Arabic, 1946. [wahhab] {The History of ancient Egyptian mosques}

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