如图,
内接于
是
的直径,
与
交于点E,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/92f0ea01-c98c-4de1-9f8c-885159c9d1f0.png?resizew=300)
(1)如图①,若
与
互余,求证:
;
(2)如图②,若
,试求直径
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f8ac8d16199c40309e4cd004682b60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/92f0ea01-c98c-4de1-9f8c-885159c9d1f0.png?resizew=300)
(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
(2)如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680f150b0d9db195f5731d4b9f4ffea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
更新时间:2022-12-06 06:24:03
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相似题推荐
解答题-证明题
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适中
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名校
【推荐1】如图,在
中,点E,F在对角线
上,且
连接
,
.
是平行四边形;
(2)若
求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25705c626e610b6d2212026724172870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462e4d5bb352ccadb47e8c492b49633b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae2722e7cf17382168fd17b079d587e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb65bee4fb8c2cbdd36e318cd652f928.png)
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【推荐2】如图,在
中,
,
的垂直平分线交
于D,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/5dd4fb99-4e59-44a5-8b96-7542454d2e40.png?resizew=164)
(1)若
的周长为16.
,求
的周长;
(2)若
将
分成两个角,
,求
的度数.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/5dd4fb99-4e59-44a5-8b96-7542454d2e40.png?resizew=164)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
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【推荐1】已知:如图,⊙O1与坐标轴交于A(1,0)、B(5,0)两点,点O1的纵坐标为
.求⊙O1的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://img.xkw.com/dksih/QBM/2012/5/22/1573384797085696/1573384853921792/STEM/e8710bea468a4dfe98acd47222992c62.png?resizew=134)
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【推荐2】如图梯形ABCD中AD//BC,AE⊥BC于E,∠ADC的平分线交AE于点O,以点O为圆心,OA为半径的圆经过点B,交BC于另一点F.
(1)求证:CD与⊙O相切;
(2)若BF=16,OE=6,求AB的值.
(1)求证:CD与⊙O相切;
(2)若BF=16,OE=6,求AB的值.
![](https://img.xkw.com/dksih/QBM/2021/1/10/2633190995542016/2633263519506432/STEM/1cbf3bb7a7554bc3931f4846b5f480b8.png?resizew=163)
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【推荐1】如图,在
中,
,以
为直径的
交
于点D,交
的延长线于点E,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/e184815a-95e6-4abc-82c1-3a8cf455d1df.png?resizew=207)
(1)求证:
;
(2)若
,求AB的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b98cebf325e4c4247617482a41073b00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/e184815a-95e6-4abc-82c1-3a8cf455d1df.png?resizew=207)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb98b5d200ab8e0b0c7ef6f2ff019015.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669c83412b7fa6741747438e149040b7.png)
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真题
【推荐2】如图,
是
的直径,
是一条弦,D是
的中点,
于点E,交
于点F,交
于点H,
交
于点G.
.
(2)若
,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ec9d8556300a772755fbbeb0a0e0e1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e487595ea4296288930e1385b76720c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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【推荐1】如图,在
中,
,以
为直径作⊙
交
于点
,过点
作⊙
的切线
交
于点
,交
延长线于点
.
![](https://img.xkw.com/dksih/QBM/2018/3/27/1910979360432128/1915555076341760/STEM/cdb02d2b91604e59901427252ef02ef5.png?resizew=183)
(
)求证:
.
(
)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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(
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【推荐2】如图,已知△ABC内接于⊙O,AB为直径.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/f71fb9d3-bf08-403d-acfa-4de4ad5013b1.png?resizew=197)
(1)若⊙O的半径为2cm,且AB=2BC,求阴影部分的面积;
(2)若∠ACB的平分线CD交⊙O于点D,点E为CA延长线上的一点,且∠ADE=∠BCD,判断DE与⊙O的位置关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/f71fb9d3-bf08-403d-acfa-4de4ad5013b1.png?resizew=197)
(1)若⊙O的半径为2cm,且AB=2BC,求阴影部分的面积;
(2)若∠ACB的平分线CD交⊙O于点D,点E为CA延长线上的一点,且∠ADE=∠BCD,判断DE与⊙O的位置关系,并说明理由.
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