Mathematics
Mathematics, 19.08.2021 20:50, jack487

ABC is a non-isosceles triangle. O, I,H are respectively the center of its circumscribed circle, the inscribed circle and its orthocenter. Prove that ∠OIH is obtuse.

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ABC is a non-isosceles triangle. O, I,H are respectively the center of its circumscribed circle, the...

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