Bibi-Khanym, Samarkand

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 36°.
• Contains three regular five-pointed star polygons with vertex angle of 72°.
• Contains one regular 10-pointed star polygon with vertex angle of 72°.
• There are two non-regular reflective tiles.
• The tiling satisfies the interlace condition and has one finite interlace and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 201 polygons.

1. Fig. 227b (Bibi-Khanym, Samarkand, Central Asia) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1399-1405AD, 801-7AH)

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