BALKAN-SL 2021 G1
Let be a triangle with . On the side we consider points and such that and . Let be the circumcenter of triangle and let be the points of intersection of the lines and respectively. Let be the circumcircle of triangle the circle with center and radius , and the circle with center and radius .
Prove that and pass through the same point and that this point of intersection lies on the line .
Proposed by Greece
Dataset text NuminaMath olympiads. Quoted with source.
Solutions
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