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MathNet 2024-part-02 — 168 problems (EN–VI) Question 44

Math Olympiad Vault · MathNet 2024-part-02 — 168 problems (EN–VI)

Question 44

A point $X$ is chosen on the median $AD$ of triangle $ABC$. The circumcircle of triangle $ABX$ intersects the median $BE$ of triangle $ABC$ at point $Y \neq B$. The circumcircle of triangle $EXY$ intersects the line $DE$ at point $K \neq E$. Prove that the location of $K$ does not depend on $X$.