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Syntractrix A syntractrix is a curve of the form :〔George Salmon (1879). ''A Treatise on the Higher Plane Curves: Intended as a Sequel to A Treatise on Conic Sections''. Published by Hodges, Foster, and Figgis. Page 290. ()〕 It is the locus of a point on the tangent of a tractrix at a constant distance from the point of tangency, as the point of tangency is moved along the curve.〔Dionysius Lardner, ''A system of algebraic geometry'' 1823, p. 261–263 ()〕 ==References==
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