G.GCI.2 Angle Formed by 2 Chords
In the applet below, the gray angle is said to be an angle formed by 2 chords of a circle. Interact with this applet for a few minutes. As you do, be sure to change the locations of the BIG POINTS each time before re-sliding the slider! What are the relationships between the inscribed angles, arcs, and angles formed by intersecting chords?