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Tri-2017-1385, incenter, general

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작성자: komath

라벨: center, general, problem, triangle

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<Tri-2025-2189>, hint
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<Tri-2025-2270>, general, tangent <Russia Regional Olympiad 2003>
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<Tri-2025-2225>, hint On line BC, MD extended intersect line BC at E. Draw a line , parallel to MDE, cutting line BCE at F. Triangles ...
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<Solid-2025-258>, hint Since MN is perpendicular to AB, CD, Triangle NBA , MDC are isosceles , and so NA=NB, MC=MD. Triangles CBD , CA...
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Tri-2020-1780, construction, general
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<Cir-2024-760>, hint Let M be the midpoint of PQ and O' S O" cuts O" at N . Quadrilaterals SMPO' and SO"QM are...
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<Tri-2025-2217>, hint Consider Simson Line. Suppose M on arc AC and let N'. P', Q' be the projections of M onto lines AB, ...

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Tri-2017-1385, incenter, general

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