在数学学习中,三角形是大家比较熟悉的一种图形,对它的性质的认识相对也比较多一些,尤其是计算面积的知识,但在我们面对一些关于三角形面积的竞赛题时,却往往显得力不从心.这说明我们对三角形面积的求解知识过于零散,没有系统化.只要对这部分知识有一个系统的认识,相信你能做的更好.现在让我们系统的看看三角形面积求解方法.1.直接套用公式(1)利用公式S△=12ah(其中h是边长为a的边上的高线长) In mathematics learning, the triangle is a familiar figure, and its understanding of the nature is relatively more, especially the calculation of the area of ​​knowledge, but when we face some questions about the triangle area of ​​the competition, but often This shows that our triangular area of ​​knowledge is too scattered, there is no systematic. As long as this part of the knowledge of a systematic understanding, I believe you can do better. Now let us look at the system of triangular area solution. 1. Apply the formula directly (1) Using the formula S Δ = 12ah (where h is the length of the high line on the side with the side a)