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• Reflecting upon reflections

  1-12

  H. Zeitler

  D. Camp

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  This paper considers many applications of reflections in geometry. It begins with a few motivational problems for the classroom and goes on to consider the formal application to cases involving reflections across one line, two lines and three lines. It wraps up with a summary of results for reflections in higher orders.
  All this stuff was treated in German and American schools too – so the paper is a typical example of German-American didactics.
  "Thinking is one of the greatest pleasure of mankind." – Galileo Galilei