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WINDMILL
Name given in 1898 by G. de Longchamps (p. 137). |
Polar equation: Cartesian equation: Rational sextic. |
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The windmill is a special case of nodal curve.
Remark: the name windmill is also given to the figure
that appears in Euclid's proof of the Pythagorean theorem.
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© Robert FERRÉOL 2017