olymmath

CZ-SK-MO 2025 Problem 6

    Let ABCABC be an acute triangle, HH its orthocenter, OO circumcenter and MM midpoint of BC.BC. Denote D≠AD\neq A the intersection of line AHAH and the circumcircle ω,\omega, E≠DE\neq D intersection of line DMDM and ω.\omega. Finally, let F≠EF\neq E be the intersection of line AEAE and the circumcircle of OME.OME. Show that FH=FA.FH=FA.

    Dataset text AI-MO AoPS. Quoted with source.

    Official text: Czech-Slovak Mathematical Olympiad 2025 official paper, page 1.

    Solutions

    No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.

    Add a solution

    Similar problems

    These problems have the most words in common with this statement.

    Locator cz-sk-mo/2025/p6 · Tag 30KFYDTFCY · Edit this page on GitHub · Keys: j next, k previous