一直角三角形的斜边长为c,其内切圆半径是r,则三角形面积与其内切圆的面积之比是( )
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2021-11-25 12:01:18
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适中
(0.65)
【推荐1】如图,在
中,已知
,
,
,
为
的内切圆,点D是斜边AB的中点,则
为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/14/86053b6f-0e7e-47b4-9d26-7228a601e7d6.png?resizew=181)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9771a5b71896958e9897fa40c230ee72.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/14/86053b6f-0e7e-47b4-9d26-7228a601e7d6.png?resizew=181)
A.![]() | B.![]() | C.![]() | D.![]() |
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适中
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【推荐2】如图,
分别切
于
交
于
两点,若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd6221b44defd851677e8d616d87d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94a8875e411cace80fe3bfa99644cc7.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/2/50946f7f-67c7-4116-b9cc-421e79e31570.png?resizew=157)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,等边三角形的边长为
,则等边三角形内切圆的半径为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/74b57cee-064c-432e-9201-8c6b3124a225.jpg?resizew=115)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/74b57cee-064c-432e-9201-8c6b3124a225.jpg?resizew=115)
A.![]() | B.![]() | C.2 | D.1 |
您最近一年使用:0次
单选题
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适中
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【推荐2】如图,在Rt
中,
,
是
的内切圆,三个切点分别为D、E、F,若
则
的面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/67cf0f2a-068f-4931-bf8c-4096ebbc2b77.png?resizew=202)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf6ef1ec89a23c2ad2f3ad97e87aa69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9925407467278420029b8ab7b9561a.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/67cf0f2a-068f-4931-bf8c-4096ebbc2b77.png?resizew=202)
A.60 | B.13 | C.13![]() | D.30 |
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