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SMO 2025 Senior Round 2 Question 2

SMO · SMO 2025 Senior Round 2

Question 2

Let $I$ be the incenter of $\triangle ABC$ and $\omega$ be its incircle. Let $D$ be the intersection of $\omega$ with $BC$. Suppose $X,Y$ are points on $\omega$ such that lines $IX,IY$ and $AD$ are tangent to the circumcircle of $\triangle AXY$. Prove that line $XY$ bisects $BC$.