如图,以AB为直径作
,在
上取一点C,延长AB至点D,连接DC,
,过点A作
交DC的延长线于点E.
的切线;
(2)若
,
,求AE的长.
![](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/7b213b0feac94a8242790df27d4192b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b1472e121da0ae5550329cfda5f0a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3bd7fcc7124307e9c33f98c53f2edf.png)
21-22九年级上·黑龙江齐齐哈尔·期末 查看更多[17]
黑龙江省齐齐哈尔市龙沙区2021-2022学年九年级上学期期末数学试题河南省鹤壁辉县市太行中学2021-2022学年九年级上学期第三次月考数学试题云南省红河哈尼族彝族自治州个旧市2021-2022学年九年级上学期期末数学试题(已下线)专题24.23 圆的切线证明方法专题(巩固篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(人教版)江苏省盐城市射阳县第六中学2022-2023学年九年级上学期期中数学试题(已下线)专题3.29 圆的切线证明方法专题(巩固篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(北师大版)(已下线)专题2.12 圆的切线证明方法专题(巩固篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(浙教版)2023年江苏省盐城市盐都区义丰初级中学下学期九年级数学第一次模拟试题云南省曲靖市富源县第七中学2022-2023学年九年级上学期期中考试数学试题2023年江苏省扬州市广陵区中考数学一模试题(已下线)黄金卷08-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(江苏泰州专用)2023年广东省东莞市企石镇中考模拟数学试题 (已下线)专题09+圆(知识串讲+热考题型+真题训练)2-2023-2024学年九年级数学上学期期中期末考点归纳满分攻略讲练(北师大版)(已下线)第05讲 直线与圆的位置关系及切线的判定与性质(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(北师大版)内蒙古自治区呼和浩特市实验中学2023-2024学年九年级下学期校模数学模拟预测题 2024年江苏省盐城市大丰区九年级数学中考模拟试题 2024年江苏省扬州市仪征市中考数学二模试题
更新时间:2022-07-24 20:13:01
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在△ABC中,AC=6cm,BC=8cm,点P从A沿AC边向C点以1cm/s的速度移动,在C点停止,点Q从C点开始沿CB边向点B以1.5cm/s的速度移动,在B点停止,点P,Q分别从A、C同时出发4秒钟后PQ=
cm.
![](https://img.xkw.com/dksih/QBM/2020/9/23/2555834277863424/2556908988645376/STEM/04c0141f-e80a-40df-b5f3-360926244975.png?resizew=137)
(1)求证:∠ACB=90°;
(2)若点P、Q分别从A、C同时出发,经过几秒钟后PQ=BQ.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cbb271baca5cd015f30e07d9eebfd8.png)
![](https://img.xkw.com/dksih/QBM/2020/9/23/2555834277863424/2556908988645376/STEM/04c0141f-e80a-40df-b5f3-360926244975.png?resizew=137)
(1)求证:∠ACB=90°;
(2)若点P、Q分别从A、C同时出发,经过几秒钟后PQ=BQ.
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解答题-证明题
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适中
(0.65)
【推荐2】如图,在
中,
,点
在
边上,
平分
,
交
于
,
是
的外接圆.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/27/df7ac7b6-e73d-463c-be0a-f61cf9809654.png?resizew=191)
(1)求证:
是
的切线;
(2)若
,
,求
的半径长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5322a78b02c2bc387ea7dce3e9461974.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/1f2281cb6df0c3c518ce5ed19a02b57e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/27/df7ac7b6-e73d-463c-be0a-f61cf9809654.png?resizew=191)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.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1】如图,
是
的直径,点C在
上,且点C为
的中点,连接
并延长交
的延长线于点D.过点C作
,垂足为点F.
是
的切线;
(2)若
,
,求
的值.
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b19c646bcb6160197fdf12a9cb31a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b62ce0cbffa4758c7a0e6fb7ca4d24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282301f0be69ee5f55c9dafd9422bbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e071479287e774f7f0990b1a649658f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
名校
【推荐2】如图,Rt△ABC中,∠B=90°,AD平分∠BAC,E是AC上一点,以AE为直径作⊙O,若⊙O恰好经过点D.
(1) 求证:直线BC与⊙O相切;
(2)若BD=3,
,求⊙O的半径的长.
(1) 求证:直线BC与⊙O相切;
(2)若BD=3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5744683b1317e0867d21d96cc5e0adec.png)
![](https://img.xkw.com/dksih/QBM/2021/7/31/2776059568783360/2781875466199040/STEM/fae9fca1109841cfa37412e86513ea6a.png?resizew=166)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
为
的直径,点C为
上一点,
于点D,
平分
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/c5ee5bf7-0206-41ac-a4c4-550b65b118c2.png?resizew=155)
(1)求证:直线
是
的切线:
(2)若
,
的半径为4,求图中阴影部分的面积.
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509d8dd6031dc0ef92075877e53fe201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246a86f34603eaf2e6a948681b831b0d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/c5ee5bf7-0206-41ac-a4c4-550b65b118c2.png?resizew=155)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb01d2b57580731c8b807ac8cffc8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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(0.65)
名校
【推荐2】如图,AB是⊙O的直径,点C在⊙O上,点D在AB延长线上,且∠BCD=∠A.
(1)求证:DC是⊙O的切线;
(2)若∠A=30°,AC=2
,求图中阴影部分的面积.
(1)求证:DC是⊙O的切线;
(2)若∠A=30°,AC=2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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解答题-问答题
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适中
(0.65)
【推荐1】如图所示,PA、PB是⊙O的切线,切点分别是A、B,Q为⊙O上一点,过Q点作⊙O的切线,交PA、PB于E、F点,已知PA=8cm,求:△PEF的周长.
![](https://img.xkw.com/dksih/QBM/2019/1/15/2119261636706304/2122078084530176/STEM/9469afedee984d6c876ea5dbef766671.png?resizew=193)
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解答题-问答题
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适中
(0.65)
【推荐2】如图,PA、PB是⊙O的两条切线,切点分别是A、B,连结AB,若直径AC=10,∠P=60°,求弦AB的长.
![](https://img.xkw.com/dksih/QBM/2019/1/9/2115058874818560/2115965385195521/STEM/20100ab950da4e25af2233c5e97f6790.png?resizew=84)
您最近一年使用:0次