Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 136
ically the axes, focus, and directrix of a conicsection when the curve only is given. In the case of theellipse draw any pair of parallel chords. Their bisector is adiameter of the ellipse.With the center of theellipse as center strikeoff a circle intersectingthe ellipse in four points.The…
Geometry, Analytic
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