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SMO 2014 Open Round 1 Question 2

SMO · SMO 2014 Open Round 1

Question 2

In the following figure, $ABC$ is a triangle and both $ABC^{\prime}$ and $AB^{\prime} C$ are equilateral triangles. Let $O$ be the meeting point of lines $CC^{\prime}$ and $BB^{\prime}$. Find $\angle BOC$ in degrees.

Question illustration