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三角形的中线是三角形中的重要线段之一.三角形中线在解决与三角形面积有关的问题时常常能发挥重要作用.由三角形的面积公式,很容易得到:结论1三角形的一边上的中线把这个三角形分成面积相等的两部分.例1如图1,AD,BE是△ABC的两条中线,AD,BE交于G点.试比较△BGD和△A GE的面积的大小.
The middle of the triangle is one of the most important segments in the triangle. The middle of the triangle can often play an important role in solving problems related to the area of the triangle. It is easy to get the formula for the area of a triangle: CONCLUSION 1 The centerline on one side of a triangle Divide into two parts of equal area.Example 1 As shown in Figure 1, AD and BE are the two center lines of △ ABC, and AD and BE are at point G. Try comparing the sizes of △ BGD and △ A GE.