Amir Qijmas al-Ishaqi, Cairo

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 36°.
• Contains 15 regular two-pointed star polygons with vertex angle of 72°.
• Contains four regular pentagons.
• Contains one regular 10-pointed star polygon with vertex angle of 108°.
• There are five non-regular reflective tiles.
• The tiling satisfies the interlace condition and has five finite interlaces and 9 infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 343 polygons.

1. Page 343, Fig. 252b (Amir Qijmas al-Ishaqi, Cairo, Egypt) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1479-81AD, 884-6AH)

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