Green mosque, Iznik

• The symmetry group of the tiling is 4*2 (p4g).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains two squares.
• 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 67 polygons.

1. Photo by David Wade: TRA 0332 (Shir Dar madrasah, Samarkand, Central Asia) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}(1636AD, 1045AH)
2. From Tony Lee (Green Mosque, Iznik, Turkey. Upper band round the minaret) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

• Wade photo TRA 0332

• Tiling whose tile angles are a multiple of 45° and whose lengths are p+q*sqrt(2).

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