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A curve defined by an equationx^2/a^2 + y^2/b^2 = 1 is known as ________(a) Ellipse(b) Directrix(c) Parabola(d) HyperbolaI got this question during an interview for a job.Enquiry is from Curves Used in Engineering Practice in chapter Lettering Practice, Scales & Curves of Civil Engineering Drawing

Answer»

The CORRECT choice is (a) Ellipse

To explain: A plane CURVE such that the sums of the distances of each POINT in its PERIPHERY from two fixed points, the foci, are equal. It is a conic section formed by the intersection of a right circular cone by a plane that cuts the axis and the surface of the cone.



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