C Humbert, Plate 424

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• Contains one regular 8-pointed star polygon with vertex angle of 45°.
• There are five non-regular reflective tiles.
• The tiling satisfies the interlace condition and has no finite interlace and two infinite interlaces.
• The tiling is edge-to-edge.
• As drawn, contains about 87 polygons.

• Plate 424 (Tin-glazed earthenware mosaic, Spain: Seville, Alcazar, 15th century) of Claud Humbert. Islamic Ornamental Design, Faber and Faber, 1980. ISBN 057111587. [humbert] {Useful, contains several tilings.}

• Wade photo SPA 2311

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