• Noun Geometry .

    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. Typical equation
    x 2 a 2 y 2 b 2 1. If a b the ellipse is a circle.

    tác giả


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