证明“眼球定理”.
如图,
,
的半径分别为
,
且
,
的切线
,
交
于点
,
;
的切线
,
交
于点
,
.连接
,
,则总有
.
(1)以下结论中所有正确结论的序号是______.
①
;
②连接
,
;
③
垂直平分
和
;
④
的长只与
,
有关,与
无关.
(2)在(1)中正确结论的基础上,证明
.
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c22f4b5c09a56bd63d8378365fbdbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1988468f866f3ccef1ae717a5e1c3892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c22f4b5c09a56bd63d8378365fbdbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d8e33929752b1cb4dd36ee9b98b45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360496a4f5cc8a5faca5e089ae4f9531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c22f4b5c09a56bd63d8378365fbdbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c3be45d41d880fa4177dcbd287d074.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/3025245c-de36-423b-915c-bad4550023e1.png?resizew=301)
(1)以下结论中所有正确结论的序号是______.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f728adcea03336e16c1487ec40cc16d.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cb59543ccf42b37ebce3f67416e561.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)在(1)中正确结论的基础上,证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c3be45d41d880fa4177dcbd287d074.png)
更新时间:2023-12-28 15:01:30
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名校
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解答题-问答题
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适中
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【推荐1】已知:如图,
中,
,D是
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,连接
,设
的面积为S,
的面积为
.
(1)当D为
边的中点时,求
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试求y与x之间的函数关系式及x的取值范围.
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解答题-证明题
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适中
(0.65)
【推荐2】如图,AB为⊙O的直径,CD⊥AB于点G,E是CD上一点,且BE=DE,延长EB至点P,连结CP,使PC=PE,延长BE与⊙O交于点F,连结BD,FD.
(1)求证:CD=BF;
(2)求证:PC是⊙O的切线;
(3)若tanF=
,AG﹣BG=
,求ED的值.
(1)求证:CD=BF;
(2)求证:PC是⊙O的切线;
(3)若tanF=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
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