# Explore Angles Inside and Outside Circles

*****Use this animation to confirm what you discovered about the relationship of angles inside and outside a circle and the 2 arcs intercepted by the sides of the angle.*****

*Watch the formula at the bottom of the applet and notice how it changes when the vertex of the angle is inside the circle vs. outside the circle.**Move Point C or D to change the size of Arc1 and Arc2. *Move Point E to change the location of the vertex of the angle or the size of Arc 2.## New Resources

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