Dye, Figure L 4b

• The symmetry group of the tiling is *2222 (pmm).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains five squares.
• There is one non-regular reflective tile and one reflective pair.
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 81 polygons.

• Figure L 4b (Interlocking windows, Mount Omei, Szechwan, 1800-1900 AD) of Daniel Sheets Dye. Chinese Lattice Designs, Dover, 1937. ISBN 048623096. [dye] {Important book topic.}

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