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在小学数学课上,我们已经学过一些简单图形的面积计算,在这里,我们将继续学习图形面积的计算方法.除了要熟记各种几何图形的面积公式外.同学们还应熟练掌握下面几条关于三角形面积的性质:(1)同底等高的两个三角形面积相等;(2)高相等的两个三角形面积之比等于底的比;(3)底相等的两个三角形面积之比等于高的比.运用面积作为工具来解决数学问题的方法叫做面积方法,我们可以运用面积方法来求点到直线的距离,求线段的比以及证明一些几何问
In elementary school mathematics class, we have learned some area calculations for simple graphics. Here, we will continue to study the method of calculating the area of the graphics. In addition to the area formulas that must be memorized in various geometric shapes, the students should also be familiar with the following Several properties regarding the area of the triangle: (1) The two triangles with the same height are equal in area; (2) the ratio of the area of the two triangles with the same height is equal to the ratio of the bottom; (3) the area of two triangles with the same bottom The ratio is equal to the high ratio. The method of using area as a tool to solve mathematical problems is called area method. We can use the area method to find the distance from the point to the straight line, find the ratio of the line segments and prove some geometrical questions.