Construction Of An Ellipse
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An illustration showing how to construct an ellipse using circle arcs. “Given the two axes, set off the short axis from A to b, divide b into three equal parts, set off two of these parts from o towards c and c which are the centers for the ends of the ellipse. Make equilateral triangles on cc, when ee will be the centers for the sides of the ellipse. If the long axis is more than twice the short one, this construction will not make a good ellipse.”
Keywords
geometry, ellipse, ellipses, conic sections, conic section, geometric construction, analytic geometry, analytical, construct, ellipse using circle arcs, circle arcGalleries
Conic Sections: EllipsesSource
Albert A. Hopkins Scientific America: Handy Book Of Facts And Formulas (New York: Munn & Co., Inc., 1918) 39
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