Yusuf ben Yakub madrasah, Cay, Turkey

• The symmetry group of the tiling is *2222 (pmm).
• All the internal angles of the constituent polygons are a multiple of 36°.
• Contains 19 regular pentagons.
• Contains one regular 10-pointed star polygon with vertex angle of 108°.
• There are four non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has four finite interlaces and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 813 polygons.

1. Page 341, Fig. 249b (Cay Tas Madrasah, Cay, Turkey) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1278AD, 676AH)

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