很多同学都有过折纸的经历,折纸是一项学习探索与娱乐两者兼备的活动.它不仅能折出很多几何形体,同时也能揭示很多数学原理.折叠纸张很自然地会出现许多几何概念,诸如正方形、矩形、直角三角形、全等、对角线、中点、内接、面积、梯形、垂直平分线、勾股定理及其他一些几何和代数概念.下面是一些折纸的例子,它说明了上述概念的运用. Many students have experienced origami. Origami is an activity of learning both exploration and entertainment. It can not only fold out many geometric shapes, but also reveal many mathematical principles. It is natural that many geometric concepts will appear on folded paper. , such as squares, rectangles, right triangles, congruent, diagonals, midpoints, inlines, areas, trapezoids, perpendicular bisectors, Pythagorean theorem, and other geometric and algebraic concepts. Here are some examples of origami that illustrate The use of the above concepts.