Kale mosque, Divrigi

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 2.5°.
• Contains one regular 8-pointed star polygon with vertex angle of 45°.
• Contains one regular 12-pointed star polygon with vertex angle of 80°.
• There are five non-regular reflective tiles (including one kite) and one reflective pair.
• The tiling satisfies the interlace condition and has one finite interlace and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 475 polygons.

1. Page 178, Fig. 42 (Kale mosque, Divrigi, Turkey) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1180-1AD, 575-6AH)

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