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          rn                                                                                 [!]-[!]


          Practical: copy at least two of the circle patterns.                               Practical: draw circle patterns mapping n to n + 7 and n to n + 16.




          a  Pattern A:  1 line of symmetry                                                  Open: design own circle and line pattern.
             Pattern B:  no line of symmetry
             Pattern C:  no line symmetry
             Pattern D:  no line symmetry
          b  Pattern A:  no rotational symmetry
             Pattern B:  rotational symmetry of order 2
             Pattern C:  rotational symmetry of order 2
             Pattern D:  rotational symmetry of order 3




          Open: design a circle pattern and write about its symmetries.
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