Gunbad-i Seh, Orumiyeh

• The symmetry group of the tiling is *X (cm).
• All the internal angles of the constituent polygons are a multiple of 36°.
• Contains 14 regular pentagons.
• Contains two regular 10-pointed star polygons with vertex angle of 108°.
• There are three 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 514 polygons.

1. Fig 5 (c) (Gunbad-i Seh, Orumiyeh, Iran) of Peter Cromwell. Islamic geometric ornament ... in Azerbaijan, To be published, 2018. [cromwell4] {}(1184AD, 579AH)

Photo?

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