Shirdar Madrasah (Registan complex)

See also Samarkand, Ulugh Beg madrasah (1420).

• 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 97.5°.
• There are five non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has no finite interlace and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 309 polygons.

1. Photo by David Wade: TRA 0334 (Shir Dar madrasah, Samarkand, Central Asia) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}(1636AD, 1045AH)

• Wade photo TRA 0334

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