三角形中位线定理是初中几何中的一个重要内容,中考试题中经常出现它与其它知识组合构成各种类型的几何证明题.三角形中位线定理的应用往往有其隐蔽性,主要体现在题目没有直接告诉中位线,在图形中也没有显示中位线,只是告诉中点、中线,有些题型还需要自己去选择有效中点获得中位线,这在一定程 The triangle median line theorem is an important content in the junior middle school geometry. It often appears in the middle examination questions that it combines with other knowledge to form various types of geometric proof questions. The application of the triangle median line theorem often has its concealment, mainly reflected in the problem Did not directly tell the median line, in the graphics did not show the median line, just to tell the midpoint, midline, some questions also need to choose their own effective midpoint to get the median line, which is in a certain range