Angle Addition Postulate - Problem 1 (Discovery)

This applet provides a simple, color-coded visual for students to discover the Angle Addition Postulate. The core concept is that when a ray lies inside an angle, it divides the angle into two smaller angles whose measures sum to the original angle. Construction highlights: uses Ray, Circle, Intersect, Angle, CircleArc, CircleSector, Textfield, InputBox, and buttons to create an interactive exploration. Students can manipulate points and observe how the sum of the two smaller angles always equals the larger angle. Suitable for middle school or high school geometry classes as an inquiry-based introduction to angle addition and angle measurement.