Opposite Angles of a Triangle

This example demonstrates how to find the opposite angles of a triangle. Opposite angles are the angles that are opposite each other in a triangle. This example involves the mathematical concepts of geometry and trigonometry. The construction points include using GeoGebra commands such as Random, Circle, Point, Rotate, Angle, Mirror, Polygon, LineBisector, etc. This example is suitable for middle school or high school mathematics classrooms, particularly for explaining the properties of triangles and the applications of geometry.