olymmath

JBMO-SL 2019 G7

    Let ABCA B C be a right-angled triangle with A^=90∘\hat{A}=90^{\circ}. Let KK be the midpoint of BCB C, and let AKLMA K L M be a parallelogram with centre CC. Let TT be the intersection of the line ACA C and the perpendicular bisector of BMB M. Let ω1\omega_{1} be the circle with centre CC and radius CAC A and let ω2\omega_{2} be the circle with centre TT and radius TBT B. Prove that one of the points of intersection of ω1\omega_{1} and ω2\omega_{2} is on the line LML M.

    Dataset text NuminaMath olympiads. Quoted with source.

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