在初中数学中,求平面图形的面积常用以下几种方法: 1.公式法(又叫直接计算法) 根据已知条件,选用有关的面积公式,直接代入已知数量求出面积. 此法是最基本的,常用来计算规则图形的面积(如三角形、矩形、梯形、正多边形,圆等).在解题时,一般要利用几何知识进行一些推理和论 In the junior high school mathematics, the following methods are commonly used to find the area of ​​a plane figure: 1. Formula method (also called direct calculation method) According to the known conditions, the relevant area formula is selected, and the area is directly substituted into the known quantity. This method is The most basic, commonly used to calculate the area of ​​regular graphics (such as triangles, rectangles, trapezoids, regular polygons, circles, etc.). In the problem-solving, the general use of geometric knowledge to conduct some reasoning and theory