Bibi-Khanym Mosque, Samarkand

This is Shirdar Madrassa (Registan complex), without the kites.

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 7.5°.
• Contains one regular 8-pointed star polygon with vertex angle of 67.5°.
• Contains one regular 12-pointed star polygon with vertex angle of 67.5°.
• There are four non-regular reflective tiles.
• The tiling satisfies the interlace condition and has two finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 231 polygons.

1. Photo by Fernando Peres Rodrigues (Bibi-Khanym, Samarkand, Central Asia) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1404AD, 806AH)
2. Photo by Brian McMorrow (Ulugh Beg Observatory, Central Asia) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1429AD, 832AH)
3. Photo by Adam Williamson (Yazd, Iran) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

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