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 36°.
• Contains 170 regular pentagons.
• Contains 23 regular 10-pointed star polygons with vertex angle of 108°.
• There are five non-regular reflective tiles (including one kite).
• The tiling satisfies the two-colour condition with straight cross-overs, but interlace counts not determined.
• The tiling is edge-to-edge.
• As drawn, contains about 2837 polygons.

1. Fig 15.3 of Brian Wichmann and David Wade. Islamic Design: a Mathematical Approach, Springer, 2017. ISBN 978-3-319-69. [ww] {}
2. Photo by David Wade: IRA 0601 (Friday mosque, Isfahan, Iran) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}

• Wade photo IRA 0601

• Two-level patterns
• First Decagonal motif

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