1.

The eccentricity of an ellipse is:

A. ratio of distance of a point, lying on the ellipse, from focus to directrix.
B. ratio of distance of a point, lying on the ellipse, from directrix to focus.
C. produce of distance of a point, lying on the ellipse, from focus to directrix,
D. sum of distance of a point, lying on the ellipse, from focus to directrix.
Answer» B. ratio of distance of a point, lying on the ellipse, from directrix to focus.


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