Angle Addition Postulate
Move the points A, B, C and D around and observe how each one effects the image and values.
1. How does moving Point A effect the values and image?
2. How does moving Point B effect the values and image?
3. How does moving Point C effect the values and image?
4. How does moving Point D effect the values and image?
5. What overall observation(s) have you notice about the relationship of the 2 small angles (CBD and ABD) and the overall big angle (CBA)?