Construction of Ellipse

Sum of Distances Construction

This applet walks through the sum of distances constructions of an ellipse.
In that definition, an ellipse is the set of all points from which the sum of the distances to the two foci is a fixed number.

Once the ellipse is constructed, the foci and the fixed distance can be changed by dragging the points.

Created with GeoGebra.

GeoGebra is a GNUed software package for mathematics visualization. The home for this application is

Return to the Saint Louis University Department of Mathematics and Computer Science home page
Return to the SLU Calculus Applet page.
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Last updated By Mike May, S.J , Dec 26, 2009. Converted to GeoGebra 5 Mike May, S.J , May 27, 2016.