如图,在
中,
,以
为直径的
交
于
,点
在线段
上,且
.
![](https://img.xkw.com/dksih/QBM/2020/1/29/2387690466361344/2388438909370368/STEM/85193a04-afaa-4d09-9583-6eb640b6bc0d.png?resizew=142)
(1)求证:
是
的切线.
(2)若
,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/b1976e2a7028cacd09bd7a83ca89bd23.png)
![](https://img.xkw.com/dksih/QBM/2020/1/29/2387690466361344/2388438909370368/STEM/85193a04-afaa-4d09-9583-6eb640b6bc0d.png?resizew=142)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a240ac1838710825d39aafc3634fe19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
2020·新疆乌鲁木齐·一模 查看更多[8]
2020年新疆维吾尔自治区乌鲁木齐市九年级上学期模拟数学试题新疆维吾尔自治区乌鲁木齐市2019-2020学年九年级上学期期末数学试题(已下线)专题3.17 切线长定理(知识讲解)-2021-2022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24.48 《圆》挑战综合(压轴)题分类专题-直线和圆的位置关系(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)(已下线)专题3.51 圆(挑战综合(压轴)题分类专题 直线和圆的位置关系)(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2.19 圆(挑战综合(压轴)题分类专题 直线与圆的位置关系)(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年陕西省西安市西安铁一中湖滨学校3月份中考模拟数学试题西藏班初中校联考2022-2023学年九年级上学期期末考试数学试题
更新时间:2020-01-30 21:54:18
|
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,点
、
在以
为直径的
上,
平分
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/30938dc7-7095-4757-9b79-a0c1f92b97b5.png?resizew=180)
(1)求证:
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9925407467278420029b8ab7b9561a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f99e59e550541f270753f9382c15d10.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/30938dc7-7095-4757-9b79-a0c1f92b97b5.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8349ce3ea3c29b5d538830c8453cf91.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b08e5274f9ff57135a9461ff1ce027a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36927b1bada2df06e532a3626c8401b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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(0.65)
【推荐2】只有一组对边平行的四边形叫做梯形,平行的两条边叫做梯形的底,不平行的两条边叫做梯形的腰;两腰相等的梯形叫做等腰梯形,如图,四边形
是等腰梯形,请你结合我们学习四边形的经验,猜想并证明等腰梯形的一条性质.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/f0b4a1ad-8c6a-4f2d-82c9-c384bfd2a428.png?resizew=150)
(1)文字描述性质_______;
(2)证明过程
已知:________
求证:________
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/f0b4a1ad-8c6a-4f2d-82c9-c384bfd2a428.png?resizew=150)
(1)文字描述性质_______;
(2)证明过程
已知:________
求证:________
证明:
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解答题-计算题
|
适中
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【推荐1】如图,在平面直角坐标系中,一次函数
的图象经过
,
,
三点,点
在
轴上方,点
在
轴正半轴上,且
,连接
,
,已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/67b2869f-f3ff-47df-90ce-bf017660144e.png?resizew=139)
(1)求直线
的表达式;
(2)求
的面积;
(3)在x轴上是否存在一点M,使得
是直角三角形?若存在,请求出点M的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e114459637a3db306e91b5e9ee9aae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fcf82d01c39fd2c96e1edba0ad37dd6.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81305c2699755218e362821302a8d0b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06fa2e45391bb3769ddc2d938a470d85.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/67b2869f-f3ff-47df-90ce-bf017660144e.png?resizew=139)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
(3)在x轴上是否存在一点M,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f955e5cc9f108de6f3ca01e5eb84c52e.png)
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【推荐2】如图,在平面直角坐标系中,点A与点B分别在y轴的正半轴和x轴的正半轴上,
,点P为AB中点,点N在线段OA上运动(点N不与O,A重合),过P作
交OB于点M,连接MN交OP于点D.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/051ca0f4-94d4-4428-90e3-1860d7d1a49b.png?resizew=217)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acd79bb9fb06f7c806eb6e17e4b613.png)
(2)设线段OM的长为x:
①记
的面积为y,求y与x的函数关系式,并求出y的最小值.
②当
=
时,求OM的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32268e2ccf8f7bc6fe5787ec49958a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3835e6398d18d162afebc92cd2ae9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/051ca0f4-94d4-4428-90e3-1860d7d1a49b.png?resizew=217)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acd79bb9fb06f7c806eb6e17e4b613.png)
(2)设线段OM的长为x:
①记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c17312c0e3e451438c2171cb96c4789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466493b7c2724a0a4b5a6e7050176fd2.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,C为
上一点,
交
于E,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/edb9b42c-4fee-48c5-8548-a9542f94636b.png?resizew=151)
(1)求证:
是
的切线;
(2)若
,
,求
的半径长.
![](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/6cee097d4fe948c3d4f1b5c28b24adf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3620030e8808da46df97330103827913.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/edb9b42c-4fee-48c5-8548-a9542f94636b.png?resizew=151)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf461f23743af212618a987311a87a33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a646b1cbda219742c44fe1233aa78f9a.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
中,
,以
的一条边
为直径作半圆
交
于点
,过点
作
于点
.
(1)求证:
是半圆
的切线.
(2)若
,
,求
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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/10/0bf14ae2-216d-47b1-a378-dcfe60a62e3e.png?resizew=203)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
真题
名校
【推荐1】如图,
是
的直径,过
外一点
作
的两条切线
,
,切点分别为
,
,连接
,
.
(1)求证:
;
(2)连接
,
,若
,
,
,求
的长.
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.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/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de6dce28eda82f5373eeac1a04ebb40.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d766206531b5c938cd8e240e663b6cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e001976cb167669511d827b571feda70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://img.xkw.com/dksih/QBM/2018/7/3/1980283563343872/1981778004312064/STEM/d8b5cb713fcc434c9682737e6001b526.png?resizew=206)
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|
适中
(0.65)
【推荐2】如图,AB是
的直径,AM和BN是它的两条切线,DE切
于点E,交AM于点D,交BN于点C,F是CD的中点,连接OF.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/020c6eee-e77e-4a6c-afe4-c5db3efddb02.png?resizew=178)
(1)求证:
;
(2)猜想:OF与CD有何数量关系?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9925407467278420029b8ab7b9561a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9925407467278420029b8ab7b9561a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/020c6eee-e77e-4a6c-afe4-c5db3efddb02.png?resizew=178)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40da5f7514d821e731e138bc72263507.png)
(2)猜想:OF与CD有何数量关系?并说明理由.
您最近一年使用:0次