Dual Billiards

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The red point looks at the blue points and is reflected in the one furthest to its right; the process repeats with the new reflected point.

Contributed by: George Beck (March 2011)
Open content licensed under CC BY-NC-SA



S. Tabachnikov, Geometry and Billiards (Mathematics Advanced Study Semesters), Providence, RI: American Mathematical Society, 2005.

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