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MathNet 2014 Question 37

Math Olympiad Vault · MathNet 2014

Question 37

Let $O$ be the circumcenter of an acute-angled triangle $ABC$. Let $AH$ be the altitude of this triangle, $M$, $N$, $P$, $Q$ be the midpoints of the segments $AB$, $AC$, $BH$, $CH$, respectively.

Let $\omega_1$ and $\omega_2$ be the circumcircles of the triangles $AMN$ and $POQ$.
Prove that one of the intersection points of $\omega_1$ and $\omega_2$ belongs to the altitude $AH$.