Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 76
lipse. When ithe point P is near either major apex, the ^arcs intersect at such a sharp angle that the ;method is nearly useless. I Another, and much the best known methodfor constructing the ellipse by poiuts,is to drawany radial line X, and also circular arcs W\and V, from the center through the… … Conic sections Fig, 121,
Gearing
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