Second Definition of an Ellipse and Locus Demonstration

2020-03-10 00:38
This GeoGebra applet dynamically demonstrates the second definition of an ellipse (focus-directrix definition). By constructing the focus, directrix, and the distance ratio, it uses the Locus command to generate the elliptic curve. The applet visually illustrates the geometric process where the locus forms an ellipse when the ratio of distances to a fixed point and a fixed line is a constant less