Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 49
Fig. 102. 32 CONSTRUCTION OF GEOMETRICAL PROBLEMS. by the radial lines 0 e, 0/, 0 e\ Of. From the points of intersection ofthese radial lines with the semicircumference draw g h^h a^li a\ g b\ parallelto the major axis. From e,/, e,/, intersections of the radial lines with the … semicircumference A C B, draw e Z>, fa, e a\ and f h parallel to the minoraxis. The intersections of these lines with i g, a h, etc., will be points on theellipse. Xow through the three points or, D and a construct an arc of a circle.Connect a and h with a chord, bisect it with a perpendicular;…
Mechanical drawing
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