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MathNet 2007-part-02 — 187 problems (EN–VI) Question 127

Math Olympiad Vault · MathNet 2007-part-02 — 187 problems (EN–VI)

Question 127

Let $P$ be a point in the interior of triangle $ABC$. The lines $AP$, $BP$ and $CP$ meet the circumcircle $\Gamma$ of triangle $ABC$ again at $K$, $L$ and $M$ respectively. The tangent to $\Gamma$ at $C$ meets the line $AB$ at $S$. Prove that if $SC = SP$, then $MK = ML$.