Zain ad-Din Yusuf, Cairo

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 1.5°.
• Contains one regular octagon.
• Contains one regular 8-pointed star polygon with vertex angle of 111°.
• There are 6 non-regular reflective tiles.
• The tiling satisfies the interlace condition and has three finite interlaces and no infinite interlace.
• The tiling is edge-to-edge.
• As drawn, contains about 279 polygons.

• Thesaurus Islamicus collection, F3246 (blind window) of Not specific. Personal Communication, Information sent to the author, 21 century . [pc]

v23