Abas and Salman, Figure 4.15

• The symmetry group of the tiling is 442 (p4).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• There are three non-regular reflective tiles.
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 61 polygons.

• Figure 4.15, page 100 and Photo 4.10, page 84 (Tomb of Shaikh Salim Chisti, Fatehpur Sikri, India) of S J Abas and A S Salman. Symmetries of Islamic Geometrical Patterns, World Scientific, 1993. ISBN 981021704. [abas] {Very many patterns in black and white.}
• Plate 24 probably from the same artifact of Susan Stronge. Indian Architectural Designs, Harry N Abrams, Inc, 1989. ISBN 081093905. [stronge] {A collection of 30 screen designs from the Victoria and Albert Museum.}

• Wade photo IND 0203

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