Sidi Madyan mosque, Cairo

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of .5°.
• Contains one regular pentagon.
• Contains one regular four-pointed star polygon with vertex angle of 54°.
• Contains one regular 8-pointed star polygon with vertex angle of 35°.
• There are 8 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 296 polygons.

1. Page 289, Fig 176a (Sidi Madyan mosque, Cairo, Egypt) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1465AD, 869AH)

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