已知直角
中,
,
,那么它的内切圆半径为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f47457616fe8173b8fe681ab61baac0.png)
更新时间:2023-12-28 15:53:50
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