Kalyan Mosque, Bukhara

• The symmetry group of the tiling is 442 (p4).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains two regular 8-pointed star polygons with vertex angle of 90°.
• There are no non-regular reflective pairs and three tiles with no mirror image.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 169 polygons.

1. BBC website (Kalyan Mosque, Bukhara, Central Asia. Part of the Po-i-Kalyan) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

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