Spiral monohedral tiling

• The tiling has no symmetry group and hence is not a repeat pattern.
• All the internal angles of the constituent polygons are a multiple of 15°.
• There are one non-regular reflective pairs and no tiles with no mirror image.
• The tiling is edge-to-edge.
• As drawn, contains about 427 polygons.

• Figure 1.2.3 (b), page 22 of B Grünbaum and G C Shephard. Tilings and Patterns, W H Freeman, 1987. ISBN 071671193. [gands] {Most important work in this area.}

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