Illustration for "ellipse"

ellipse

A closed plane curve that is the set of all points such that the sum of the distances from two fixed points (foci) is constant.

GRE

Example

The equation x²/9 + y²/4 = 1 describes an ellipse with a semi-major axis of 3 and a semi-minor axis of 2.

Synonyms

ovaloblong curve

Found in

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