Palacio Dar Al Horra

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 22.5°.
• Contains one square.
• Contains one regular octagon.
• Contains two regular 8-pointed star polygons with vertex angle of 90°.
• There are three non-regular reflective tiles.
• The tiling satisfies the interlace condition and has one finite interlace and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 261 polygons.

1. Photo from Nick Crossling (Palacio Dar Al Horra, Granada, Spain. Wooden ceiling) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

v54