Corollary 3: The measure of an angle formed by two chords intersecting inside a circle is half the sum of the intercepted arcs.
Formula:
m∠AOD = (m∠ACB + m∠APB)/2
Where:
m∠AOD = Measure of the angle formed by two chords intersecting inside a circle
m∠ACB = Measure of an inscribed angle that intercepts arc AB
m∠APB = Measure of an inscribed angle that intercepts arc CD
Corollary 3 of Inscribed angle theorem
Include Formula
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