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Created page with "== Introduction == The foci of an ellipse are two distinct points located along the major axis of the ellipse. These points are crucial in defining the geometric properties of the ellipse. An ellipse is the set of all points where the sum of the distances to the two foci is constant. This fundamental property distinguishes ellipses from other conic sections such as circles, parabolas, and hyperbolas. Understanding the role and properties of the foci is essential for exp..."