Angle inside a circle

AD and BC are chords in circle O. The textshows the measures of the angles and arcs in circle O. Drag A, B, C, or D to adjust the chords and their angles in the circle.[br][br]1. How are angles AEB and CED related? How are their measures related?[br]2. Are the measures of the arcs and angles equal? What is the only way you can make them all equal? [br]3. How does the total measure of arcs AB and CD compare to the measures of angles AEB and CED?[br]4. The larger arc will be (closer to / farther from) the vertex of the vertical angles.

Information: Angle inside a circle