Alcazar, Cuarto del Principe

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 2.5°.
• Contains one regular two-pointed star polygon with vertex angle of 45°.
• Contains one regular two-pointed star polygon with vertex angle of 80°.
• Contains one regular octagon.
• Contains one regular 12-pointed star polygon with vertex angle of 60°.
• There are 9 non-regular reflective tiles (including 2 kites) and one reflective pair.
• The tiling satisfies the interlace condition and has one finite interlace and two infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 473 polygons.

1. Photo by David Wade: SPA 2721 (Alcazar, Seville, Spain. Cuarto del Principe) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}
2. Photo from Nick Crossling (Spain) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

• Wade photo SPA 2721

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