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三角形中求面积或面积之间关系时,常用方法主要有:(1)直接利用三角形的面积公式:S△=1/2ah,问题转化为求底及该底上的高;(2)恰当地把图形分成若干部分(割补法);(3)把两个三角形面积的比化成高和底边乘积的比.
Triangles seeking the relationship between the area or area, the commonly used methods are: (1) the direct use of the triangle area formula: S △ = 1 / 2ah, the problem into the bottom and the bottom of the high; (2) properly The figure is divided into several parts (cutting law); (3) the ratio of the area of the two triangles into the high and the bottom product.