Tomb of Umar al-Suhrawardi, Baghdad

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 36°.
• Contains one regular two-pointed star polygon with vertex angle of 72°.
• Contains one regular 10-pointed star polygon with vertex angle of 108°.
• There are five non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has no finite interlace and two infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 265 polygons.

1. Internet photo (Tomb of Umar al-Suhrawardi, Baghdad, Iraq) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1234AD, 631AH)

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