Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 47
be the same. The line A B pass-I ~^~^.^ ing tjirough the foci is the major axis, and the perpendicular C D atthe centre of it is the minor axis. To constricct an ellipse, the axesbeing known (Fig. 100). 1st Method.—Let the two axesbe the lines A B and C D. FromC as a centre, with a radius equalto E… … CONSTRUCTION OF GEOMETRICAL PROBLEMS. 31
Mechanical drawing
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