Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 137
n the transverse axis.Drawing the focal tangents determines the directrix. Theconjugate axis is limited by the arc struck off with vertex ascenter and radius equal to distance from focus to center. In the case of the parabola,after determining a diameterby bisecting any pair of paral-lel chords,… … Art. 63. — Supplementary Chords Chords from any point of ellipse or hyperbola-to the extrem-ities of the transverse axis are called supplementary. Let (x, y) be any point of the
Geometry, Analytic
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