El-Said tiling, page 53, Figure 44

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains two squares.
• Contains one regular two-pointed star polygon with vertex angle of 45°.
• Contains one regular octagon.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• There is one non-regular reflective tile (including one kite).
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 135 polygons.

1. Page 245 of S J Abas and A S Salman. Symmetries of Islamic Geometrical Patterns, World Scientific, 1995. ISBN 981021704. [abas] {Very many patterns in black and white, no sources given.}
2. Page 53, Figure 44 (No colouring or source given) of Issam El-Said, ed. El-Bouri & Critchlow. Islamic Art and Architecture: The system of Geometric Design, Garnet, Reading, UK, 1993. ISBN 187393845. [elsaid2] {}
3. Position not recorded of I El-Said and A Parman. Geometric concepts in Islamic Art, World of Islam Festival Publishing Co, 1976. ISBN 090503503. [elsaid] {Gives sources of several interesting patterns.}

Photo?

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