Minbar, 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 14 regular five-pointed star polygons with vertex angle of 36°.
• Contains four regular 10-pointed star polygons with vertex angle of 72°.
• There are 6 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 1045 polygons.

1. Page 141, Fig 5.45 (Friday mosque, Isfahan, Iran. Minbar) of Eric Broug. Islamic Geometric Design, Thames and Hudson, 2013. ISBN 978050051695. [broug2] {Many excellent photos}(1310AD, 709AH)
2. Fig 12.11c of Brian Wichmann and David Wade. Islamic Design: a Mathematical Approach, Springer, 2017. ISBN 978-3-319-69. [ww] {}

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