Istanbul

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 36°.
• Contains 21 regular two-pointed star polygons with vertex angle of 72°.
• Contains 19 regular pentagons.
• Contains two regular 10-pointed star polygons with vertex angle of 72°.
• There are 13 non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has 10 finite interlaces and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 1261 polygons.

1. Photo by Dick Osseman (Turkey) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

• First Decagonal motif

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