The angle formed by a chord and a tangent is equal to 1/2 the measure of the intercepted arc. The angle of 117 measure intercepts arc DEF, so it is equal to 1/2 the measure of arc DEF, so arc DEF measures 234.
Sam G.
asked • 04/20/21Chapter 10: Angle Relationships in Circles
Line t is tangent to the circle. Find the measure of arc DEF.
The measure of arc DEF is ___ degrees.
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