Two Polygons, PP Class 20, [cmm,d2,d2], IH Class 17.

T00904 = data149/NEW2

data149/NEW2 (Click on image for high-quality PDF version)

Geometry

The symmetry group of the tiling is 2*22 (cmm).
All the internal angles of the constituent polygons are a multiple of 45°.
Contains two regular two-pointed star polygons with vertex angle of 45°.
There is one non-regular reflective tile.
The tiling satisfies the two-colour condition.
The tiling is edge-to-edge.
The tiling satisfies the two-polygon condition.
As drawn, contains about 45 polygons.

References

Publications referenced:

PP Class 20, [cmm,d2,d2], IH Class 17 of S J Dawes and B A Wichmann. A New Class of Tilings with Two Prototiles, Visual Mathematics, Vol 3, No 4., 2001. [dawes] {Revises CD/booklet.} Available on Internet.

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