如图,AB是⊙O直径,点C,D为⊙O上的两点,且
=
, 连接AC,BD交于点E,⊙O的切线AF与BD延长线相交于点F,A为切点.
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896459274772480/2952127412215808/STEM/b3182b63-4667-4311-b65e-28d8fedb520b.png?resizew=179)
(1)求证:AF=AE;
(2)若AB=8,BC=2,求AF的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f9353ca110c8b81561455b232dbc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896459274772480/2952127412215808/STEM/b3182b63-4667-4311-b65e-28d8fedb520b.png?resizew=179)
(1)求证:AF=AE;
(2)若AB=8,BC=2,求AF的长.
21-22九年级上·河南南阳·期末 查看更多[6]
河南省南阳市淅川县2021-2022学年九年级上学期期末数学试题(已下线)热点07 相似三角形-2022年中考数学【热点·重点·难点】专练(已下线)考点30 点、直线与圆的有关位置关系河南省南阳市南召县2022-2023学年九年级下学期数学学业水平测试试卷2023年辽宁省营口市第一中学九年级第一次摸底数学试题2023年山东省济南市槐荫区中考三模数学试题
更新时间:2022-04-06 07:41:30
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相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】已知在Rt△ABC中,∠BAC=90°,AB=AC,点D为BC边中点.点M为线段BC上的一个动点(不与点C,点D重合),连接AM,将线段AM绕点M顺时针旋转90°,得到线段ME,连接EC.
![](https://img.xkw.com/dksih/QBM/2021/11/29/2863958362587136/2903020975333376/STEM/06a046673d314c84821a543094d5aaa8.png?resizew=389)
(1)如图1,若点M在线段BD上.
①依据题意补全图1;
②求∠MCE的度数.
③用等式表示线段AC、CE、CM之间的数量关系,并加以证明
(2)如图2,若点M在线段CD上,请你补全图形后,直接用等式表示线段AC、CE、CM之间的数量关系 .
![](https://img.xkw.com/dksih/QBM/2021/11/29/2863958362587136/2903020975333376/STEM/06a046673d314c84821a543094d5aaa8.png?resizew=389)
(1)如图1,若点M在线段BD上.
①依据题意补全图1;
②求∠MCE的度数.
③用等式表示线段AC、CE、CM之间的数量关系,并加以证明
(2)如图2,若点M在线段CD上,请你补全图形后,直接用等式表示线段AC、CE、CM之间的数量关系 .
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,在
中,
,以点A为圆心、
长为半径的弧交
于点
,连接
,过点B作
,垂足为点E.
![](https://img.xkw.com/dksih/QBM/2023/1/7/3147540357185536/3150742282092544/STEM/69915dd76de4439cb56f5d714a7f0369.png?resizew=133)
(1)若
,
,求
的面积;
(2)若
,
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da34cf9e12ae21e20af861a581ca0fe.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c897a54f2e36bc4b52fba74b41c89d2d.png)
![](https://img.xkw.com/dksih/QBM/2023/1/7/3147540357185536/3150742282092544/STEM/69915dd76de4439cb56f5d714a7f0369.png?resizew=133)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf52ceda5fe0629211c3f83898baa4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b03bb56c7e76954b192bd8595a0865a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f67aa21e3a0cab704c52cc74a7e072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,
是
的直径,点A和点E是
上位于
的两侧的点,
,
,垂足为D,
、
的延长线交于点G,
的延长线交
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/baa29b96-9c20-4e25-b587-6c0987c6f7c6.png?resizew=199)
(1)判断
的形状并说明理由;
(2)若
,
,求
的直径
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/6c6743d46804193a68ed10d20a68609f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/baa29b96-9c20-4e25-b587-6c0987c6f7c6.png?resizew=199)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1366a61179b5114a5e9cab25585f6a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab53738f1d5eb0321037649951df42f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图所示,四边形
内接于
,
,
为
上点,且
.
![](https://img.xkw.com/dksih/QBM/2020/3/30/2430830504960000/2430890346545152/STEM/8af862e42d834789b0c17b53af683006.png?resizew=121)
(1)证明:
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0facf189b2a3153beb7b9e077d3b1146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc656f30624361df296e81da548b6e75.png)
![](https://img.xkw.com/dksih/QBM/2020/3/30/2430830504960000/2430890346545152/STEM/8af862e42d834789b0c17b53af683006.png?resizew=121)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893cc3bd3fe3143b4fdac916f198bbc2.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
是
的直径,
是
外的一点,且
,
与
相交于点
,过点
作
的切线交
于点
.
;
(2)当
,
时,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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc90c2d45477e166b02359525f40aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,AB是直径,AP是过点A的切线,点C在
上,点D在AP上,且
,延长DC交AB于点E.
(1)求证:
.
(2)若
的半径为5,
,求
的长.(结果保留
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212bfbd5575772ca36d6fc3e7b246e49.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a08599072e368d5a36cf72583853f4c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe888e44b85658447c98ad1d6ff4f226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://img.xkw.com/dksih/QBM/2020/5/10/2459810819817472/2460504575475712/STEM/f729c8c54f7f4db986699b18bdbf34c7.png?resizew=182)
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解答题-证明题
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适中
(0.65)
名校
【推荐1】如图,在
中,
是边
上的动点,连接
,作
,
,得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/464c4edb-549b-4786-8af3-1491301b9869.png?resizew=212)
(1)求证
;
(2)若
在边
上运动,用尺规作出点
的运动轨迹,并简要说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59f9a4fe996045c2e1adb8caa06c1c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102e836344156ea835d7d4e9b4120fe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/464c4edb-549b-4786-8af3-1491301b9869.png?resizew=212)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8403902de9e7e6e428e25b8a24126e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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解答题-证明题
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适中
(0.65)
名校
【推荐2】如图,在
中
,
,
.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/d0a45dcc-caed-44d4-9d5a-57e64647cc69.png?resizew=192)
(1)
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a277db452e76240ec83ec6a2864bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9953b7b5c647641edbec4c2ab90a65f4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/d0a45dcc-caed-44d4-9d5a-57e64647cc69.png?resizew=192)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54c9b8ffb4afdfe27c6ffce01ec231b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f8abb0dd0a0e1fa20e8e433f0c5ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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