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 25.71 (π/7)°.
• Contains one regular 14-pointed star polygon with vertex angle of 77.14 (3π/7)°.
• There are 7 non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has no finite interlace and four infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 365 polygons.

1. Page 371, Fig. 286b (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)

• Tilings not constructible by straightedge and compass

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