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Arbitrary Geometric Transformations
Mathematica 6 has built-in arbitrary symbolic geometric transformations that can immediately be applied to any graphics objects.
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Graphics[{EdgeForm[Gray],

  Nest[{{Black, Rectangle[{0, -.5}], White, Rectangle[{-1, -.5}]}, 

     Scale[Rotate[#, \[Pi]/14], .95]} &, {}, 70]}]
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