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Tangent to incircles.

Source: ISR 2021 TST1 p.3

May 4, 2022
geometryincircleorthocentercommon tangent

Problem Statement

Let ABCABC be an acute triangle with orthocenter HH. Prove that there is a line ll which is parallel to BCBC and tangent to the incircles of ABHABH and ACHACH.
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