Critchlow, page 128

• The symmetry group of the tiling is 4*2 (p4g).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains two regular octagons.
• There is one non-regular reflective tile.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 54 polygons.

1. Page 128 (Drawn with regular octagons rather than 4-star polygons) of Keith Critchlow. Islamic Patterns - An Analytical and Cosmological Approach, Thames and Hudson, 1976. ISBN 050027071. [critchlow] {Gives about 6 patterns not found in Bourgoin.}

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