Yusif ibn Kuseyir, Nakhchivan

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 60°.
• Contains one regular two-pointed star polygon with vertex angle of 60°.
• Contains one regular 6-pointed star polygon with vertex angle of 60°.
• There are three 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 393 polygons.

1. Page 235, Fig 98c (Western tomb tower, Kharraqan, Iran) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1093-4AD, 485-6AH)
2. Fig 3 (f) (Yusif ibn Kuseyir, Nakhchivan, Azerbaijan, Central Asia) of Peter Cromwell. Islamic geometric ornament ... in Azerbaijan, To be published, 2018. [cromwell4] {}(1148AD, 542AH)

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