把一个图形沿某一直线折叠,使之与另一图形重合,不但形成了轴对称的概念,而且也给人以美的感受。因而根据这个道理便创造出无穷无尽的漂亮且丰富多彩的图案,装饰人们的生活,美化生存的环境.实际上,折叠的作用并不只此.在解题方面,大家已经看到用折叠把三角形的三个内角拼成了一个平角,用折叠证明了垂径定理。同样运用折叠我们还可以: Folding a figure along a straight line to make it coincide with another figure not only creates the concept of axisymmetric, but also gives the impression of beauty. Therefore, according to this principle, it creates infinitely beautiful and colorful patterns that decorate people’s lives and beautify their living environment. In fact, the role of folding is not only this. In solving problems, we have seen triangles folded The three interior corners form a flat angle, and the vertical theorem is proved by folding. Using the same fold we can also: