1 .
中,
,
,垂足为
.若
,
,则
长为
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/8b0209d571444264bde61c0c775fd7d8.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/8376401c404342628e9e9523fab5ae02.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/a93307c0cf184cd5a5c45b62bed1fa6d.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/2afb9963cea14c7eb24786f9a7918751.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/75006e016ea24c22816ab8c40c73d181.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/d1ccc189b8ed456ea68b3a36e6978f15.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/c1ee1f118ffa49de96b21d88cbae417a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 如图所示,已知
是圆心,直径
和弦
相交于点
,
,
,
,则
等于
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/3921ec3c590445baa52a1041fd79ab28.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/d078ad3c5e304917969a5aa2637fb94a.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/46a3f5efc0014ce6bf83a536bc3d05d9.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/0265cd0807b94ce28d417b8cee9202cf.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/32b78dd824ba4c139fdec2dbcf656d84.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/13a221a800c94202b39b9ed179bda3bb.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/5a8ad33512354a158f701b6ec772fa42.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/532c4f12fc4c4f66904c9f31d9674345.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/46a3f5efc0014ce6bf83a536bc3d05d9.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/3921ec3c590445baa52a1041fd79ab28.png)
A.3 | B.8 |
C.12 | D.14 |
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3 . 如图,已知
的两条直角边
的长分别为
,
,以
为直径的圆与
交于点
,则![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/94e00855a85e4b71b8ad14f87e9151f4.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/2bbb6e09090e401793daa0964f7dddef.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/69783d4c38144cd39b78adaee2ff6aac.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/3ac3abcd7e01475ba3bc8cd7d116d981.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/d77342f8181f4271874506de52f37c73.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/c69ac50ad58b4e88aba219cf7b6608c4.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/8ac9ea89836c4bb3a6267a30248a07d1.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/065a052be8a049dda362564e250a8f10.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/0c57f4806cf04816a7bb484caa74fd5b.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/94e00855a85e4b71b8ad14f87e9151f4.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216481792/STEM/2bbb6e09090e401793daa0964f7dddef.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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4 . 如图所示,
的两条弦
和
相交于点
,
和
的延长线相交于点
,下面结论:
;
;
;
.
其中正确的有
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/06344601ab674307bb68879b9d753f3d.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/6260521ba5e7479c9075763efdca1a40.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/fbf72da2406247b5af20ba916f59f8fe.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/273eb9a6681546e2b9ec9b366fedd749.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/346fbcce9a134da6ba1638afa276e3bc.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/d15985c8df374a1b9e9bb34167588aa8.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/27bbd3b340e14c8eaca137c1f2a7b3d1.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/9270ede200d74eb3ba0cc96c943b4286.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/9bb52539e9764984819604acf2227035.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/84ed42c077354b87b5260b27c77c71eb.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/e6457bec85dc43cc8673b2a2d34b004d.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/7a3e673ae41a435dbbac5978c3f38fe2.png)
其中正确的有
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216432640/STEM/06344601ab674307bb68879b9d753f3d.png)
A.1个 | B.2个 |
C.3个 | D.4个 |
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5 . 如图,锐角三角形ABC中,以BC的直径的半圆分别交AB,AC于点D,E,则⊿ADE的面积与⊿ABC的面积的比值是
![](https://img.xkw.com/dksih/QBM/2015/11/24/1572305116585984/1572305121771520/STEM/4a6fc26879ef4d638b3a7071ac90090c.png)
![](https://img.xkw.com/dksih/QBM/2015/11/24/1572305116585984/1572305121771520/STEM/4a6fc26879ef4d638b3a7071ac90090c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 如图,
与圆
相切于点
,直线
交圆
于
两点,弦
垂直
于
.则下面结论中,错误的结论是
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/b2df773a37f44a55819580eea066025c.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/1e6de715c71947ffb93698c644fb08fd.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/aad3fe08b4ff44f7ae29e6ae788bfe83.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/92a4e272faa64a3fbfdd5daf7da7701c.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/699d77a28d5746c28a8b90aa38ed688b.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/aad3fe08b4ff44f7ae29e6ae788bfe83.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/a776c881234744d0a931057ed759000d.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/3c5272f03da246a18f4f34b914d1b487.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/20bafe97868e4767be2734d9433e31fd.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/3053f4b15ac14e178496c968a14f9463.png)
![](https://img.xkw.com/dksih/QBM/2015/11/18/1572294899572736/1572294905364480/STEM/b2df773a37f44a55819580eea066025c.png)
A.![]() | B.∠ACE=∠ACP |
C.![]() | D.![]() |
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7 . 如图,平行四边形ABCD中,
,若
的面积等于
,则
的面积等于.
![](https://img.xkw.com/dksih/QBM/2015/6/3/1572117314371584/1572117320204288/STEM/df1d28f6677c43ef8272e0f07031a841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e39c1e1d1015006418068836f1dc1a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425e79e4e7c13e2ea8ae3d4f8d31ac33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc947a236aa4724f84ffef51b388a6e9.png)
![](https://img.xkw.com/dksih/QBM/2015/6/3/1572117314371584/1572117320204288/STEM/df1d28f6677c43ef8272e0f07031a841.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2014高三·全国·专题练习
名校
8 . 已知直线2x-my+1-3m=0,当m变动时,所有直线都通过定点
A.(-![]() | B.(![]() | C.(![]() | D.(-![]() |
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2016-12-03更新
|
2740次组卷
|
9卷引用:安徽省合肥市肥东县高级中学2020-2021学年高二上学期第二次月考数学(理)试题
安徽省合肥市肥东县高级中学2020-2021学年高二上学期第二次月考数学(理)试题山西省长治市第二中学2021-2022学年高二上学期第一次月考数学试题四川省南充高中2019-2020学年高一下学期第一次月考试题数学(文科)试题(已下线)2015高考数学(理)一轮配套特训:8-1直线的倾斜角与斜率、直线方程山西省大同市第一中学2017-2018学年高二上学期期中考试数学试题1山西省大同市第一中学2017-2018学年高二上学期期中考试数学试题2(已下线)章末检测3(课后作业)-2018-2019版数学创新设计课堂讲义同步系列(人教A版必修2)智能测评与辅导[文]-直线与圆江西省南昌县莲塘第三中学2020-2021学年高二上学期期中考试数学试题
9-10高二下·河南焦作·期末
9 . 已知,如图,在梯形ABCD中,AD∥BC,AD=3,BC=7,点M,N分别是对角线BD,AC的中点,则MN=
![](https://img.xkw.com/dksih/QBM/2014/11/10/1571892604821504/1571892610424832/STEM/efd44bfec3544256b3ebb2de320a755f.png)
![](https://img.xkw.com/dksih/QBM/2014/11/10/1571892604821504/1571892610424832/STEM/efd44bfec3544256b3ebb2de320a755f.png)
A.2 | B.5 | C.![]() | D.![]() |
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10-11高二下·黑龙江牡丹江·期末
10 . 在
中,
是斜边上的高线,
则
为.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b28ef176d78867a81ac621c62e341b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91acc65064f9b4ce4520cac292a84a11.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次