Friday mosque, Isfahan

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 25.71 (π/7)°.
• Contains one regular heptagon.
• There are three non-regular reflective tiles.
• 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 129 polygons.

1. Page 366, Fig. 279b (Beyazid II mosque, Istanbul, Turkey) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1501-6AD, 906-11AH)
2. Page 44, photo 26 (Friday mosque, Isfahan, Iran) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}

• Tilings not constructible by straightedge and compass

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