MathDB
CMI Entrance 19#4

Source:

October 31, 2019
CMIgeometryparallelogram

Problem Statement

Let ABCDABCD be a parallelogram .. Let OO be a point in its interior such that ∠AOB+∠DOC=180∘.\angle AOB + \angle DOC = 180^{\circ} . Show that ,∠ODC=∠OBC.,\angle ODC = \angle OBC .
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