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利用剪纸和折纸能够简单而形象地验证一些几何定理.这对理解定理是很有益处的.例如,三角形的内角和是180°.这是一条最基本的几何定理,小学里我们曾用折纸方法对它加以验证.方法如下:
Using paper cuts and origami can simply and visually verify some geometric theorems. This is useful for understanding the theorem. For example, the triangle’s interior angle is 180°. This is a basic geometric theorem. We used the origami method in elementary schools. Validate it. The method is as follows: