如图,直线y=
x+1与x轴、y轴分别相交于A、B两点,P是该直线上的任一点,过点D(3,0)向以P为圆心,
AB为半径的⊙P作两条切线,切点分别为E、F,则四边形PEDF面积的最小值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/e65b99f0-6932-47d7-9188-002c94486851.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/e65b99f0-6932-47d7-9188-002c94486851.png?resizew=152)
A.![]() | B.![]() | C.2![]() | D.![]() |
更新时间:2019-04-15 10:43:45
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【推荐1】如图所示,
为⊙O切线,
为圆上一点,延长
交
线段于点,连接
交线段
于点
,若
,且
,
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2020/10/3/2563222151299072/2564391439040512/STEM/2169c6ecea774d94862bb7abb090c850.png?resizew=211)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,直线l与
相切于点A,P是
上的一点,过点
于B,PB交
于点Q,连接PA.若
,
,则PQ=( )
![](https://img.xkw.com/dksih/QBM/2022/6/1/2992127299100672/2994615721041920/STEM/e580b3c5-92d2-48ef-82bd-5e41bf373b31.png?resizew=172)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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A.16 | B.12 | C.18 | D.14 |
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【推荐1】如图,已知
,
,
,
与
、
均相切,点
是线段
与抛物线
的交点,则
的值为( )
![](https://img.xkw.com/dksih/QBM/2021/6/16/2744209961721856/2744236485951488/STEM/6d36fff6-1c4e-4a81-a960-08b21df449b0.png?resizew=243)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434845564fd5765244f8d1aa9240fa39.png)
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【推荐2】如图,在
中,
,
,
为
中点,则当
最大时,
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/24ccbc91-71d0-4c24-8002-857d52a12200.png?resizew=198)
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