Cahier and Martin, page 50 (bottom)

• The symmetry group of the tiling is 442 (p4).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains one square.
• There are two non-regular reflective tiles and two tiles with no mirror image.
• The tiling satisfies the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 215 polygons.

1. Page 50 (bottom) of Charles Cahier and Arthur Martin. 376 Decorative Allover Patterns from Historic Tilework and Textiles, Dover, 1868. ISBN 048626146. [cahier]

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