我原来其实也在想:应该不需要辅助线才对(否则无从体现梅涅劳斯定理的优越性)。
赞赞赞。过程很简洁,而且不失一般性~
我原来其实也在想:应该不需要辅助线才对(否则无从体现梅涅劳斯定理的优越性)。
赞赞赞。过程很简洁,而且不失一般性~
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