Persian, early 15th century

• The symmetry group of the tiling is 22* (pmg).
• All the internal angles of the constituent polygons are a multiple of 45°.
• There is one non-regular reflective tile.
• The tiling satisfies the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 39 polygons.

1. Page 224, Figure 25.12b (No location, Persian, Iran) of Peter S Stevens. Handbook of regular patterns: an introduction to symmetry in two..., MIT Press, 1984. ISBN 026269088. [stevens] {Illustrations in black and white}(1400-50AD, 802-54AH)

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