olymmath

IR-TST 2022 Problem 8

    In triangle ABCABC , with AB<ACAB<AC , II is the incenter, EE is the intersection of AA -excircle and BCBC . Point FF lies on the external angle bisector of BACBAC such that EE and FF lieas on the same side of the line AIAI and ∠AIF=∠AEB\angle AIF=\angle AEB . Point QQ lies on BCBC such that ∠AIQ=90\angle AIQ=90 . Circle ωb\omega_b is tangent to FQFQ and ABAB at BB , circle ωc\omega_c is tangent to FQFQ and ACAC at CC and both circles pass through the inside of triangle ABCABC . if MM is the Midpoint od the arc BCBC , which does not contain AA , prove that MM lies on the radical axis of ωb\omega_b and ωc\omega_c .

    Proposed by Amirmahdi Mohseni

    Dataset text AI-MO AoPS. Quoted with source.

    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 ir-tst/2022/p8 · Tag 1C2D7HM4R4 · Edit this page on GitHub · Keys: j next, k previous