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[几何] 任意三角形中一条中线一条对角线的相关模型

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郝酒 Posted 2014-9-23 21:53 |Read mode

下面这些模型都有哪些结论和题目啊？

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kuing Posted 2014-9-25 21:39

记 $AA_1=m_a$, $AA_2=w_a$, $BC=a$, $AB+BC+CA=2s$，则
\[m_aw_a\geqslant s(s-a).\]

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