Alternative version: al-Azhar mosque, Cairo

For the correct version, see Bourgoin, Plate 188 (top).

• The symmetry group of the tiling is *2222 (pmm).
• Contains one regular two-pointed star polygon with vertex angle of 55.46 (64271536π/208581255)°.
• Contains two regular five-pointed star polygons with vertex angle of 36°.
• Contains one regular 10-pointed star polygon with vertex angle of 72°.
• There are 6 non-regular reflective tiles.
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 338 polygons.

1. Page 341, Fig. 250b (al-Azhar mosque, Cairo, Egypt) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}

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