Prisse d'Avennes, photo 251

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains one equilateral triangle.
• Contains one regular 12-pointed star polygon with vertex angle of 60°.
• There are five non-regular reflective tiles (including 2 kites).
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 477 polygons.

1. Photo 251, from Internet source (ceiling: 12-sided stars, various dates, with colour) of Prisse d'Avennes. Arabic Art in Color, Dover, 1877. ISBN 048623658. [d-avennes] {Contains 25 geometric patterns in colour, and gives the source in most cases more on the Internet.} Fuller version available on Internet.

• Wade photo EPC 029

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