Cartuja Monastery, Seville

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains two equilateral triangles.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• Contains one regular 12-pointed star polygon with vertex angle of 60°.
• There are 7 non-regular reflective tiles (including one kite) and one reflective pair.
• The tiling satisfies the interlace condition and has two finite interlaces and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 291 polygons.

1. Internet photo from Alberto Leon (Cartuja Monastery, Seville, Spain. Mosaic) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

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