如图,已知直线
与
相离,
于点
,
与
相交于点
,
与
相切于点
的延长线交直线
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/b6415700-b6da-48de-8108-d9b5f02899ac.png?resizew=349)
(1)请证明:
;
(2)若
,求
的半径和线段
的长;
(3)若在
上存在点
,使
是以
为底边的等腰三角形,请直接写出
的半径
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add5a0c3d79985e90d92c17a11373fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d4b93cd713d057b7c6e5ecfd97d6d5.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060cb91284e298ca98d90472e1c3d5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/b6415700-b6da-48de-8108-d9b5f02899ac.png?resizew=349)
(1)请证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6914d401b0e7099dbea8ebdd5052ee7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(3)若在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82bc4b926b29e58400df99ebf5771404.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/11bc05f41215f9894e11d1df0465751a.png)
更新时间:2024-02-21 13:38:46
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】“一题多解利于拓宽思路,多题一解利于归纳方法”.中考复习学会总结归纳,题可以越做越少,方法却越用越活.下列两个问题请用相同的方法解答并做简要的方法归纳:
(1)问题①:如图,P为正方形
边
上任一点,
于点G,在
的延长线上取点E,使
,连接
,
.
的平分线交
于N点,连接
,求
度数;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/9412f741-095b-4edd-be19-4ccb74895577.png?resizew=144)
(2)问题②:如图,P是正方形
边
上一个动点,线段
与
关于直线
对称,连接
并延长交直线
于点F,连接
.求证:
;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/e7bba6d0-55f2-43ca-80c2-70898f28d98d.png?resizew=151)
(3)方法归纳:
①隐含了什么特殊角 ;
②可以作什么特殊三角形 ;
③构造了什么基本图形 .
(1)问题①:如图,P为正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f889668cdffbc1af33b53257c76804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cf3d634f45b2ad45804b152fa057f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29e7c4d6216690152430b09f9cf0c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d650c9cf6ee86c87851e24d1dc09743b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/9412f741-095b-4edd-be19-4ccb74895577.png?resizew=144)
(2)问题②:如图,P是正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32326495961bdc6376b9cb350cc46453.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/e7bba6d0-55f2-43ca-80c2-70898f28d98d.png?resizew=151)
(3)方法归纳:
①隐含了什么特殊角 ;
②可以作什么特殊三角形 ;
③构造了什么基本图形 .
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,
内接于半圆,
是直径,过A作直线
,使
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/dcee03f5-2b36-46e3-80c7-be210ca8fa61.png?resizew=159)
(1)求证:
是半圆的切线;
(2)尺规作图:作
的中点D,连结
交
于G,过D作
于E,交
于F(保留作图痕迹),并求证:
.
![](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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4536721335272e9790104bf7cc7e92c6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/dcee03f5-2b36-46e3-80c7-be210ca8fa61.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)尺规作图:作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ca3dd37272f50d52d8deb2a62dd820.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】(1)如图
,
为
的弦,已知
的半径是
,
,求
到
的距离;
(2)仅用无刻度直尺按要求画图,不写画法,保留画图痕迹.(用虚线表示画图过程,实线表示画图结果)
任务
:如图
,
为
的弦,画一条与
长度相等的弦;
任务
:如图
,正五边形
内接于圆,请作出一条直径;
请你选择其中一个任务,完成作图.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d768ffd5bf75080e8ff5ce6b472c0cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
(2)仅用无刻度直尺按要求画图,不写画法,保留画图痕迹.(用虚线表示画图过程,实线表示画图结果)
任务
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
任务
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6723f8b9d907981aa735cd96386bee36.png)
请你选择其中一个任务,完成作图.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/4cd07ccc-759e-45bf-924b-4878aea585d9.png?resizew=455)
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解答题-问答题
|
适中
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【推荐2】如图,在
中,边AB的垂直平分线交AB、BC于点M、E,边AC的垂直平分线交AC、BC于点N、F,
的周长为10.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/20/02bb9c11-0267-4872-995e-102a03a02e37.png?resizew=323)
(1)求BC的长;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/20/02bb9c11-0267-4872-995e-102a03a02e37.png?resizew=323)
(1)求BC的长;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8106ba1fe80682061a208751f9dba3ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/409af14585a2baedbe5c6f301206ebf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
的直径
,
和
是它的两条切线,
与
相切于点E,并与
,
分别相交于D,C两点.设
,
.
(1)点O到直线
的距离为 ;
(2)求y与x的函数解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2633a6f46b0847158eebb05c743561aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ea3b26d207bf9a05934dd0c1e0fa12.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/9c375ff2-677f-4805-81f0-e407fe0e5adf.png?resizew=170)
(1)点O到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)求y与x的函数解析式.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,AB为
的直径,C为
上一点,
的切线BD交OC的延长线于点D.
(1)求证:
;
(2)若
,
.求CD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/3d97cdc586744d208b6f69c9813af977.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c30fad62ae4e960b07aaf1e3b11398c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/eda4c3dd-8567-4692-9e89-03be63d2a14d.png?resizew=138)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,菱形ABCD的对角线AC,BD相交于点O,过点D作BD的垂线交BC的延长线于点E,连接OE,OE交CD于点F.
![](https://img.xkw.com/dksih/QBM/2022/6/20/3005619846397952/3007315517472768/STEM/131cbc1cb4c9439c87a4e406b95a072c.png?resizew=197)
(1)求证:四边形ACED为平行四边形;
(2)求
的值.
![](https://img.xkw.com/dksih/QBM/2022/6/20/3005619846397952/3007315517472768/STEM/131cbc1cb4c9439c87a4e406b95a072c.png?resizew=197)
(1)求证:四边形ACED为平行四边形;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7073eba935072a42d907710f7cf2272.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,
中,
是
边上的中点,
是线段
上的一动点,且
∥
分别交直线
于
两点.
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758999760216064/2789760875356160/STEM/6b4fca47-79fb-4cde-86e4-856ef3c874fb.png?resizew=374)
(1)求
的长;
(2)如图1,当
时,求
的值;
(3)如图2,随点
位置的改变,
是否为一个定值?如果是,求出这个定值,如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bb06aaa95612d782212dede0a617d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92dbe7d01d47d6c2db1396180caf76d.png)
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758999760216064/2789760875356160/STEM/6b4fca47-79fb-4cde-86e4-856ef3c874fb.png?resizew=374)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f358cc1c7ab5db661d488bbcefb491f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d88aa77da12a390fb72a4d07d9cba7b.png)
(3)如图2,随点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1952ba61f779c2740c1b41d0492f58e.png)
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