Locus of the External Angle Bisector of an Ellipse Focal Triangle

2019-12-11 04:55
This GeoGebra applet demonstrates the geometric locus related to the external angle bisector of the focal triangle of an ellipse. By constructing an ellipse and its focal triangle, and using geometric construction commands such as angle bisectors, orthogonal lines, and intersections, it dynamically displays the locus formed by relevant points when a vertex of the triangle moves along the ellipse.