# 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 http://www.geogebra.org.

Return to the Saint Louis University Department of Mathematics and Computer Science
home page

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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.