Kharraqan tomb tower (1093)

• The symmetry group of the tiling is 442 (p4).
• All the internal angles of the constituent polygons are a multiple of 90°.
• There are no non-regular reflective pairs and one tile with no mirror image.
• The tiling satisfies the interlace condition and has no finite interlace and one infinite interlace.
• The tiling is edge-to-edge.
• As drawn, contains about 77 polygons.

• Figure 60-2, page 143 of Lazar Izrailevich Rempel. Arkhitekturnyi ornament Uzbekistana: ..., Tashkent, 1961. [rempel] {602p}
• Plate 18 of Sonia P, Seherr-Thoss. Design and color in Islamic architecture; Afghanistan, Iran, Turkey, Smithsonian Institution, 1968. [seherr] {312p}

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