Bibi-Khanym, Samarkand

• The symmetry group of the tiling is 4*2 (p4g).
• All the internal angles of the constituent polygons are a multiple of 90°.
• Contains two squares.
• There is one non-regular reflective tile.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 83 polygons.

1. Photo by David Wade: TRA 0310 (Bibi-Khanym, Samarkand, Central Asia) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}(1404AD, 806AH)
2. Vol 1, page 112 (Hakim mosque, Isfahan, Iran) of Mahmood Maher al-Naqsh. Design and execution of drawing in Iranian tilework, Islamic period, Reza Abbasi Museum, 1983. [iran] {Good collection of Iranian patterns, text in Persian} Available on Internet.(1657-62AD, 1067-72AH)
3. Page 105, bottom panel (Central Asia. Tiles contain square Kufic script) of Umberto Scerrato. Momuments of Civilization: Islam, Cassell, London, 1976. ISBN 030429695. [scerrato] {First published in Italy in 1972}

• Wade photo TRA 0310

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