Inscribed Angles That Intercept the Same Arc
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If two inscribed angles intercept the same arc, then the angles are equal.
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Contributed by: Jay Warendorff (March 2011)
Open content licensed under CC BY-NC-SA
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"Inscribed Angles That Intercept the Same Arc"
http://demonstrations.wolfram.com/InscribedAnglesThatInterceptTheSameArc/
Wolfram Demonstrations Project
Published: March 7 2011