Derived from 3.3.3.4.4, with squares replaced by diamonds

• The symmetry group of the tiling is 2222 (p2).
• All the internal angles of the constituent polygons are a multiple of 8.57 (π/21)°.
• Contains one equilateral triangle.
• Contains one regular two-pointed star polygon with vertex angle of 25.71 (π/7)°.
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 102 polygons.

1. Derived from figure on page 188 of B Grünbaum and G C Shephard. Tilings and Patterns, W H Freeman, 1987. ISBN 071671193. [gands] {Most important work in this area.}
2. Uniform Star Polygons with Digons of B A Wichmann. The World of Patterns, World Scientific, 2001. ISBN 981024619. [wich2] {Only new patterns ascribed to this.}

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