例正方形l,I以剪拼成二角形.方法如 下: 仿图l的 方法,解答下 列问题: 因、困五 操作役计:图1 (l)如图2,对直角三角形,设计一种方 案,将它分成若干块,再拼成一个与原二角形 等面积的矩形. (2)如图3,对任意二角形,设计一种方 案,将它分成若干块,再拼成一个与原只角形 等面积的矩 Example square l, I to cut into a square shape scissors. The method is as follows: Imitation method l, to answer the following questions: Cause, trapped five operation tenant: Figure 1 (l) Figure 2, for the right triangle, design a program , Divide it into several pieces, and then spell it into a rectangle with the same area as the original dihedral. (2) As shown in Fig. 3, for any of the diagons, design a scheme, divide it into several pieces, and then spell it into one and the original only Angular area moment