A regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant, or resulting when a cone is cut by an oblique plane that does not intersect the base.
- For example he shows how to deform a circle into an ellipse and proves other results on deforming conic sections.
- There are three non-degenerate conics: the ellipse, the parabola, and the hyperbola.
- The first law states that the orbit of a satellite is an ellipse, and that one of the foci of the ellipse must be located at the centre of the Earth.
Words that rhyme with ellipseChips, eclipse, thrips
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