Arab museum, Cairo

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains two regular octagons.
• There is one non-regular reflective tile.
• The tiling satisfies the interlace condition and has no finite interlace and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 84 polygons.

1. Page 259, Fig. 128e (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. Figure 216 central pattern, page 218 (No location, Egypt. Kursi of inlaid wood, Black and white photo) of Martin S. Briggs. Muhammadan architecture in Egypt and Palestin, Oxford, Clarendon Press, Pressmark 32.F.79, 1924. [briggs] {255p}

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