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 18°.
• Contains two regular two-pointed star polygons with vertex angle of 72°.
• Contains one regular pentagon.
• Contains one regular 10-pointed star polygon with vertex angle of 72°.
• There are five non-regular reflective tiles (including 2 kites).
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 326 polygons.

1. Page 337, Fig. 243d (Amir Qijmas al-Ishaqi, Cairo, Egypt) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}

v54