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Online Geometry
Problem 741: Scalene Triangle, Incenter, Circumcircle,
Midpoint, Arc, Congruence.
Level: High School, Honors Geometry, College,
Mathematics Education
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The figure shows a triangle ABC with the
incenter I and the circumcircle O. If D is the midpoint of arc AC, prove
that AD, DI, and DC are congruent.
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