This was a very cool activity. We did not use a compass, we only needed a ruler to make the curves of pursuit come out correctly. I gave each student a sheet of paper that had a square and triangle on the front, and a pentagon and hexagon on the back. I wanted my students to have to opportunity to see how each of these worked. They were amazed when the curves made their appearance!
I did take a moment to show the math behind the magic of the pursuit curve. I took them to the site http://www.mathcurve.com/courbes2d.gb/poursuite/poursuite.shtml. This site showed them the curve studied by Leonardo da Vinci in 1732.
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