Quadrilaterals with Exterior Angle Equal to Interior Opposite Angle

2024-12-27 02:35
This GeoGebra applet demonstrates the geometric property of a quadrilateral where an exterior angle equals its interior opposite angle. By dynamically constructing circles, intersections, segments, and angles, users can visually verify the theorem that such a quadrilateral is cyclic. It utilizes dynamic coordinates to help learners understand cyclic quadrilaterals.