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MathNet 2011 Question 33

Math Olympiad Vault · MathNet 2011

Question 33

Let $CH$ be the altitude of an acute angled triangle $ABC$, and let $O$ be the centre of its circumcircle. If $T$ is the foot of the perpendicular drawn from vertex $C$ to the line $AO$, prove that the line $TH$ bisects the side $BC$.