论文部分内容阅读
任意一个三角形或任意一个凸四边形,你能通过剪拼得到一个与其面积相等的矩形吗?1.剪拼直角三角形为矩形.方法:一刀剪拼法.已知在△ABC中,∠C=90°,沿着中位线EF,一刀剪切后可以拼成矩形,剪切线与拼图如图1所示.
Any triangle or any convex quadrilateral, you can get a rectangular area with the same size by clipping? 1. Scissor right-angled triangle is rectangular. Method: Knife-cut method. It is known that in △ ABC, ∠C = 90 °, along the median line EF, after a knife cut can be spell rectangular, cut line and puzzle shown in Figure 1.