Madrassa-yi-Madar-i-Shah, Isfahan

• The symmetry group of the tiling is 632 (p6).
• All the internal angles of the constituent polygons are a multiple of 30°.
• Contains one regular 12-pointed star polygon with vertex angle of 90°.
• There are no non-regular reflective pairs and three tiles with no mirror image.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 291 polygons.

• Wade photo IRA 1125

• Tiling with star polygons with 12 points whose vertex angle is 90°

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