Kritiya House, Cairo

• The symmetry group of the tiling is 4*2 (p4g).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains one regular two-pointed star polygon with vertex angle of 45°.
• Contains two regular 8-pointed star polygons with vertex angle of 90°.
• There is one non-regular reflective tile and one reflective pair.
• The tiling satisfies the interlace condition and has no finite interlace and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 105 polygons.

1. Thesaurus Islamicus photo (Jamal al-Din al-Dhahabi, Cairo, Egypt) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1637AD, 1047AH)
2. Archnet photo (Gayer-Anderson, Cairo, Egypt. By fountain in salamlik) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

• Tiling whose tile angles are a multiple of 45° and whose lengths are p+q*sqrt(2).

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