Great Mosque, Divrigi

• The symmetry group of the tiling is *2222 (pmm).
• 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 90°.
• Contains one regular 9-pointed star polygon with vertex angle of 80°.
• Contains one regular 12-pointed star polygon with vertex angle of 75°.
• There are 10 non-regular reflective tiles (including 3 kites) and four reflective pairs.
• The tiling satisfies the interlace condition and has no finite interlace and two infinite interlaces with non-straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 889 polygons.

1. Page 474, Fig. 421 (Great Mosque, Divrigi, Turkey) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1228-9AD, 625-6AH)

• Tiling with three or more proper stars
• Tilings not constructible by straightedge and compass

Photo?

v54