Bourgoin, Plate 70

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains one regular hexagon.
• Contains one regular 12-pointed star polygon with vertex angle of 60°.
• There are 6 non-regular reflective tiles (including 2 kites).
• The tiling satisfies the interlace condition and has one finite interlace and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 555 polygons.

1. Page 71 (Ben Youssef Madrasah, Marrakesh, Morocco. Window of coloured glass) of Eric Broug. Islamic Geometric Patterns, Thames & Hudson, 2008. ISBN 978050028721. [broug] {Elegant drawings}(1557-74AD, 964-82AH)
2. Plate 70 of J Bourgoin. Arabic Geometrical Pattern and Design, Dover, 1879. ISBN 048622924. [bourgoin] {Classical book of around 200 hand-produced patterns, in back and white.} Fuller version available on Internet.

• Wade photo BOU 070

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