Divrigi hospital, Turkey

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 22.5°.
• Contains one square.
• Contains one regular octagon.
• There are two non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has one finite interlace and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 209 polygons.

1. Page 259, Fig. 128f (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)
2. Photo from Archnet, found by Aslam Qureshi (Great Mosque, Divrigi, Turkey) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1228-9AD, 625-6AH)

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