如图,
是
的直径,
是半圆
上的一点,
平分
,垂足为
,
交
于
,连接
.
(1)判断
与
的位置关系,并证明你的结论;
(2)若
,求
的长;
(3)若
是弧
的中点,
的半径为5,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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369e5aa902a0de337c4372b383f11808.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/b6f6fbe2-362e-4f84-b28f-500aa5db84ac.png?resizew=148)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3269c1a92b3873a9452990bace6ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(3)若
![](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/3d97cdc586744d208b6f69c9813af977.png)
更新时间:2023-12-09 19:58:47
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图,
是等边三角形,
.动点
从点
出发,沿
方向运动,运动速度为
,同时,动点
从点
出发,沿
方向运动,运动速度为
.过点
作
的平行线,交
于点
,以
,
为邻边作平行四边形
,连接
.当点
和点
重合时,运动停止.设运动的时间为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/e7c911ed-4123-4086-848e-b8aaa05b745f.png?resizew=146)
(1)当
为何值时,平行四边形
为菱形?
(2)设
的面积为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1878c4a926059922121f6ae9b6d6a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
,写出
与
的函数关系式;
(3)连接
,
,是否存在某一时刻
,使
为等腰三角形?若存在求出
值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101f78049c744e6b30df21a521ddb73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171e02f78e30ca17469c7ec007dd8db3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b49022a6f55817b5d7e3ab443b5491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f051275aa34c90fd6957973f6640753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e3e1858d0e727667046db684cfe8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0e65e147b109f2bbfd3a3f502bbc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6ca353de1284b525a0f011c93bef4a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/8e7cade7-9502-4d75-948d-a2384574e525.png?resizew=154)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/e7c911ed-4123-4086-848e-b8aaa05b745f.png?resizew=146)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e3e1858d0e727667046db684cfe8e4.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038813af26682903a689ea8209173c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1878c4a926059922121f6ae9b6d6a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3e298b2c864876f01b8674f5137484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7478446966dabdfe71a75089dabafb2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9fe272253e745eeecbad0f770fb46d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐2】如图,
为
的直径,点
在
上,
的平分线
交
于点
,过点
作
,交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/08b0aa6c-4325-4b7f-98ed-f348c0cfa3dc.png?resizew=147)
(1)求证:直线
是
的切线;
(2)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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/066cd386723885c535ea720f5817847a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/08b0aa6c-4325-4b7f-98ed-f348c0cfa3dc.png?resizew=147)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐1】如图,⊙O中,弦AC、BD交于点E,连接AB、AD、OB,∠ABO=∠CAD
![](https://img.xkw.com/dksih/QBM/2022/3/4/2928750032994304/2931811150274560/STEM/1a1b6a30389346b08ef6917c68adfe94.png?resizew=550)
(1)求证:AC⊥BD;
(2)连接CD,∠BDC+2∠ADB=180°,求证:AB=AC;
(3)在(2)的条件下,连接OC交BD于点F,⊙O的弦BH交AC于点G,CG=DF,AB=10,
=10,求GH的长.
![](https://img.xkw.com/dksih/QBM/2022/3/4/2928750032994304/2931811150274560/STEM/1a1b6a30389346b08ef6917c68adfe94.png?resizew=550)
(1)求证:AC⊥BD;
(2)连接CD,∠BDC+2∠ADB=180°,求证:AB=AC;
(3)在(2)的条件下,连接OC交BD于点F,⊙O的弦BH交AC于点G,CG=DF,AB=10,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6c1d75127e20c88489b8d0a02e2618.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】如图1,已知
是
的直径,弦
于点
,点
是线段
延长线上的一点,连结
交
于点
,连接
交
于点
,连接
和
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/bcdc6096-2b4c-42e3-a378-111fc3c61e46.png?resizew=259)
(1)求证:
.
(2)若
,且
,求
的长.
(3)如图2,连接
,若四边形
为平行四边形,求
的值(直接写出答案).
![](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/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/bcdc6096-2b4c-42e3-a378-111fc3c61e46.png?resizew=259)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370719fb90196e67744c517eabc770c5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3b3bdfbd221386750aa5dcf4744beeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272217a7904ef1537aa13ac01ab6d692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(3)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5faca03dd3d2b7cc37f4c7c3aad7783e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d794e62ef8dea2bbaf24154ff21001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a94db6ba4697520f0ca2e7f51818f6b.png)
您最近一年使用:0次
解答题-证明题
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较难
(0.4)
【推荐1】如图,已知AB是⊙O的直径,BC、EF是⊙O的弦,且EF垂直AB于点G,交BC于点H,CD与FE延长线交于D点,CD=DH.
(1)求证:CD是⊙O的切线;
(2)若H为BC中点,AB=10,EF=8,求CD的长.
(1)求证:CD是⊙O的切线;
(2)若H为BC中点,AB=10,EF=8,求CD的长.
![](https://img.xkw.com/dksih/QBM/2019/1/8/2114527772590080/2118468881465344/STEM/adc619913e644613bf8882687a035a6d.png?resizew=141)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】如图,在
中,
,在斜边
上取一点 O,以
为半径作
,交
于点N,交
于点M,连接
.
求
的半径.
(2)如图2,若
与
交于点D,连接
,且 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d2681b812663a00ac05b566d646b45.png)
①求证:
是
的切线;
②若
, 求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9211a10c8a7de80a874b17ba8a89bb8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)如图2,若
![](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/2af08433effe3c4b97fd38e5939907c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d2681b812663a00ac05b566d646b45.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f049506796d669c926f37d115db72fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图1,四边形
内接于
,
为直径,过点
作
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/2023/2/22/3180413156917248/3188556512362496/STEM/e926ec3966e84e4db6aaf7feaf08afe9.png?resizew=357)
(1)求证:
;
(2)若
是
的切线,
,连接
,如图2.
①请判断四边形
的形状,并说明理由;
②当
时,求
,
与
围成阴影部分的面积.
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2023/2/22/3180413156917248/3188556512362496/STEM/e926ec3966e84e4db6aaf7feaf08afe9.png?resizew=357)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a0e8a5b22995702a2618ae7c1262d7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65639672f444b3d4dc6fc4f357ddbd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
①请判断四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607543bb9f55b8a141ed2d6cf0e1a20b.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐2】如图,
是
的直径,C、D是
上两点,且D为弧
中点,过点D的直线
交
的延长线于点E,交
的延长线于点F,连接
.
是
的切线;
(2)若
的半径为2,求阴影部分的面积;
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105f8109ad877091b4edb665fb702779.png)
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