Friday Mosque, Isfahan

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains one regular 12-pointed star polygon with vertex angle of 60°.
• There are five non-regular reflective tiles (including one kite).
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 255 polygons.

1. Page 408, Fig. 335a (Friday Mosque, Isfahan) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1121-2AD, 514-5AH)

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