题目内容
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/96710e20.png)
(1)请你在原图上画出应怎样划分.
(2)在下面的空白处分别画出重新拼成的四种图形(要画出拼的痕迹).
分析:将长的中点与对边的两个顶点连接,分割成一个大三角形和两个小三角形即可.
解答:解:(1)划分如下:
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/7a879f5e.png)
(2)直角三角形:
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/e0c2792a.png)
等腰梯形:
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/5aa64b76.png)
平行四边形:
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/f0dd4ec9.png)
正方形:
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/16bba099.png)
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/7a879f5e.png)
(2)直角三角形:
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/e0c2792a.png)
等腰梯形:
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/5aa64b76.png)
平行四边形:
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/f0dd4ec9.png)
正方形:
![](http://thumb.1010pic.com/pic3/upload/images/201308/125/16bba099.png)
点评:本题主要考查学生的动手能力及空间想象能力,即把剪下的图形与剩下的图形拼在一起所构成图形的形状.
![](http://thumb2018.1010pic.com/images/loading.gif)
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