Quadrilateral with Supplementary Opposite Angles

2024-12-27 02:33
This GeoGebra applet demonstrates the geometric properties of a quadrilateral with supplementary opposite angles, also known as a cyclic quadrilateral. By constructing a circle and four points on it, the applet forms a quadrilateral and measures its opposite angles, visually proving that their sum is 180 degrees. The dynamic model allows users to drag vertices and observe real-time angle changes,