Grafton, Plate 12A

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains three squares.
• There are four non-regular reflective tiles.
• The tiling satisfies the interlace condition and has no finite interlace and three infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 529 polygons.

1. Plate 12A (top left) of Carol Belanger Grafton. Decorative Tile Designs in full Color, Dover, 1992. [grafton] {92 High quality colour plates; dated 1870-1930.}

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