Aqbughawiyya madrasah

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 7.5°.
• Contains one regular two-pointed star polygon with vertex angle of 60°.
• Contains one regular four-pointed star polygon with vertex angle of 60°.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• There are 6 non-regular reflective tiles (including 2 kites).
• The tiling satisfies the interlace condition and has three finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 238 polygons.

1. Page 288, Fig 174a (Aqbughawiyya madrasah, al-Azhar mosque, Cairo, Egypt) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1340AD, 740AH)

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