Demonstration of the Coincidence of Three Lines in a Triangle

This GeoGebra applet dynamically demonstrates the geometric property of the 'coincidence of three lines' in isosceles or equilateral triangles. By constructing the altitude, median, and angle bisector of a triangle, users can visually observe that under specific conditions (such as the base of an isosceles triangle), these three special segments coincide into a single line. The applet uses precise