Izzeddin Kaykavus hospital and mausoleum, Sivas

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains one square.
• Contains one regular 6-pointed star polygon with vertex angle of 60°.
• There are 6 non-regular reflective tiles (including one kite).
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 341 polygons.

1. Page 242, Fig. 106a (Sifahidiye Madrasah, Sivas, Turkey) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1217AD, 613AH)

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