Ellipse Definition by MrQuinn

This example demonstrates the definition of an ellipse as the locus of points where the sum of distances to two fixed points (foci) is constant. Key math concepts include ellipse definition, foci, directrix, major axis, minor axis, and eccentricity. It is constructed using GeoGebra commands like Point, Ellipse, Segment, Distance, and LaTeX to plot foci F_1, F_2, center C, segment c, point P, axes a and b, and annotate distances PF_1, PF_2, and d. Suitable for high school students studying ellipse geometry.