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Ellipse linkage (van Schooten)

Author:Michael Borcherds, kkh
Topic:Ellipse
Uses the Knocken Tool from www.geogebra.org/m/35150 Reference: culturemath.ens.fr/materiaux/maschietto/maschietto.htm (Exercitationum Mathematicorum libri quinque de van Schooten, 1657)

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