Yusuf ibn Kuseyir mausoleum

Note that the central star is not regular.

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 30°.
• Contains two squares.
• Contains one regular 6-pointed star polygon with vertex angle of 60°.
• There are five non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has three finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 345 polygons.

1. Fig 3 (g) (Yusif ibn Kuseyir, Nakhchivan, Azerbaijan, Central Asia) of Peter Cromwell. Islamic geometric ornament ... in Azerbaijan, To be published, 2018. [cromwell4] {}(1148AD, 542AH)
2. Plate 46 (Yusuf ibn Kuseyir mausoleum, Azerbaijan, Central Asia) of Károly Gink. Azerbaijan, mosques, turrets, palaces, Corvina Kiadó, 1979. ISBN 963130321. [gink] {text by Ilona Turánszky}(1161-2AD, 555-6AH)

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