Ellipse
Ellipse is a curve on a plane surrounding two focal points such that the sum of the distances to the two focal points is constant for every point on the curve.
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F1, F2 - fixed points; foci, focal points of ellipse A, B,C, D - vertices of ellipse S - center of ellipse 2a=|AB| - major axis 2b=|CD| - minor axis e - linear eccentricity e2 = a2 - b2 r1, r2 - radial vectors of the point T |
Created by Helena Halas, translated by Helena Halas and Iva Kodrnja - 3DGeomTeh - Developing project of the University of Zagreb