[几何] 三角形三边分别为 4，5，6. 内心为 I，求 IH 的长

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isee posted 2022-7-3 22:14 |Read mode

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题：已知三角形三边分别为 4，5，6. 内心为 I，垂心为 H，求 IH 的长.

答案：$\sqrt{\frac {11}7}$

isee=freeMaths@知乎

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