在实际问题中,有些图形不是以基本图形(如三角形、矩形、正方形、平行四边形等)的形状出现,而是由一些基本图形组合、拼凑而成的简单图形,在计算它们的面积时无法直接应用公式.但是,对这些图形进行割补、剪拼等操作,可将它们转化为基本图形加以解决. In practical problems, some graphics do not appear in the shape of basic graphics (such as triangles, rectangles, squares, parallelograms, etc.), but are simple graphics that are composed of a combination of basic graphics and patchwork. They cannot be directly calculated when calculating their area. Apply formulas. However, these graphics can be trimmed, clipped, etc., and they can be converted into basic graphics to solve them.