A picture showing the Draftsman's fifth method for drawing an ellipse, a curve in a plane surrounding two focal points such that the sum of the distan
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Patrick Guenette / Alamy Stock VectorImage ID:
2B76XG0Releases:
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22 July 2019More information:
A picture showing the Draftsman's fifth method for drawing an ellipse, a curve in a plane surrounding two focal points such that the sum of the distances to the two focal points is constant for every point on the curve, vintage line drawing or engraving illustration.