在△ABC中,AC=4,BC=2,AB=2
,以AB为边在△ABC外作等腰直角△ABD,连接CD,则CD=_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
更新时间:2022-06-14 07:46:09
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