: Matemáticas: ellipse

geometry > geometric figure > conic section > ellipse

geometry > Euclidean geometry > plane curve > conic section > ellipse

ellipse

In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. It generalizes a circle, which is the special type of ellipse in which the two focal points are the same. The elongation of an ellipse is measured by its eccentricity ${\\displaystyle e}$ , a number ranging from ${\\displaystyle e=0}$ (the limiting case of a circle) to ${\\displaystyle e=1}$ (the limiting case of infinite elongation, no longer an ellipse but a parabola).
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Ellipse)

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