Construction of an Ellipse Small 320×171 Medium 640×341 Large 1024×546 Download Tiff Original 2400×1279 | (165.3 KB) Description Illustration of half of an ellipse and its auxiliary circle used to construct an ellipse by points, having given its two axes. Keywords auxiliary circle, center, chords, conic sections, construct, construction, corresponding points, ellipse, ellipses, focal chord, focal radii, foci, focus, major axis, minor axis, oval, ovals, radius, section Galleries Conic Sections: Ellipses Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 431
