△ABC在平面直角坐标系xOy中的位置如图所示.
![](https://img.xkw.com/dksih/QBM/2021/9/12/2806367118721024/2806675504766976/STEM/c8b42c25-2ef0-4f01-9fb3-cae033787515.png)
(1)作△ABC关于点C成中心对称的△A1B1C1;
(2)将△A1B1C1绕点A1顺时针方向旋转90°后得到的△A2B2C2,作出△A2B2C2;
(3)利用网格画出AB边上的高CD,并求出CD= .
![](https://img.xkw.com/dksih/QBM/2021/9/12/2806367118721024/2806675504766976/STEM/c8b42c25-2ef0-4f01-9fb3-cae033787515.png)
(1)作△ABC关于点C成中心对称的△A1B1C1;
(2)将△A1B1C1绕点A1顺时针方向旋转90°后得到的△A2B2C2,作出△A2B2C2;
(3)利用网格画出AB边上的高CD,并求出CD= .
更新时间:2021-09-12 19:38:50
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