Geometric Construction of a Vertical Ellipse in Standard Form

2020-07-29 13:52
This GeoGebra applet demonstrates the geometric construction of a vertical (major-axis-along-y) ellipse in standard form x²/b² + y²/a² = 1 (a > b > 0). Using commands such as Intersect, OrthogonalLine, and Point, the applet dynamically displays the center O, vertices A and B, and foci C and D. Auxiliary segments and text annotations illustrate the Pythagorean relationship a² = b² + c² among the se