三角形中位线定理揭示了图形线段之间的数量关系和位置关系,它常与直角三角形的性质“直角三角形斜边上中线等于斜边的一半”联袂解决几何中点问题,以近年中考题为例说明如下. The triangle median line theorem reveals the quantitative relationship and positional relationship between the line segments of a graph. It is often associated with the nature of a right-angled triangle: the median line on the hypotenuse of a right-angled triangle is equal to half the hypotenuse. This solves the problem of the mid-point geometry. The example is as follows.