如图,点C是
的中点,直线
与
相切于点 C,直线
与切线
相交于点E,与
相交于另一点D,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/5b7bca28-c372-429b-bf86-cd90d3cb9f5d.png?resizew=123)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333ab24c4935210f4c232cd0c0fae358.png)
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/5b7bca28-c372-429b-bf86-cd90d3cb9f5d.png?resizew=123)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333ab24c4935210f4c232cd0c0fae358.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9a8953913ec49276732dbd862a7277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300d3ec6447250bb25915ae86873929a.png)
更新时间:2024-04-02 21:49:42
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
的内接四边形
中,M为
中点,N为
中点,
于点E,连接
、
,并延长
交
于点F.
求证:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a743a97fd860358a222b2e7551faed.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/6/34678c1a-18df-4fad-b3ce-7382a5a23980.png?resizew=141)
求证:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a743a97fd860358a222b2e7551faed.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f77417f53ceae992ed23c3ec080d5aed.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】(1)画线段
(点
在左侧);
(2)以
为顶点,
为一边,画
;
(3)以
为顶点,
为一边,在
的同侧画
,
与
相交于点
;量得
;
(4)画出
中点
,连接
,此时量得
;请你猜想
与
的数量关系是:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
(5)作点
到直线
的距离
,且量得
,请你猜想
与
的数量关系是:
,位置关系是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b4dedad79b058480c117f7d6f2cfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9f1baf59175378072c706e910b7350.png)
(3)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e520cef3cebf757a24737ffb661834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2f1140045f10e1944fcbc1f0b7a9af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f3bf70722b22983c120d008d097602.png)
(4)画出
![](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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d57b4243fa7f6f9c73d11f3123c42ddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f3bf70722b22983c120d008d097602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
(5)作点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404728d0ea2699c71e674f30dd984abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f3bf70722b22983c120d008d097602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404728d0ea2699c71e674f30dd984abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐3】已知:如图①所示的三角形纸片内部有一点P.
任务:借助折纸在纸片上画出过点P与BC边平行的线段FG.
阅读操作步骤并填空:
小谢按图①~图④所示步骤进行折纸操作完成了画图任务.
在小谢的折叠操作过程中,
(1)第一步得到图②,方法是:过点P折叠纸片,使得点B落在BC边上,落点记为
,折痕分别交原AB,BC边于点E,D,此时∠
即∠
=__________°;
(2)第二步得到图③,参考第一步中横线上的叙述,第二步的操作指令可叙述为:_____________,并求∠EPF的度数;
(3)第三步展平纸片并画出两次折痕所在的线段ED,FG得到图④.
完成操作中的说理:
请结合以上信息证明FG∥BC.
任务:借助折纸在纸片上画出过点P与BC边平行的线段FG.
阅读操作步骤并填空:
小谢按图①~图④所示步骤进行折纸操作完成了画图任务.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/8/e61644cb-c2d7-480b-81d1-c5969fd1a8f5.png?resizew=638)
在小谢的折叠操作过程中,
(1)第一步得到图②,方法是:过点P折叠纸片,使得点B落在BC边上,落点记为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cc3bbafc5384f851f4491ccdd2791e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541c0cb89f08aa4c937c0beb915e0a7.png)
(2)第二步得到图③,参考第一步中横线上的叙述,第二步的操作指令可叙述为:_____________,并求∠EPF的度数;
(3)第三步展平纸片并画出两次折痕所在的线段ED,FG得到图④.
完成操作中的说理:
请结合以上信息证明FG∥BC.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,已知线段
是
的直径,点C是
上不同于A,B的点,连接
,
,
的平分线交
于点D,交
于点F,过点D作
交
延长线于点E.
(1)求证:
是
的切线;
(2)若
的半径是
,当
时,直接写出
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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.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/5b750a0aeab4974c590b538e009fb3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/21/02eaa1ca-3a3f-4674-9a9a-afb552235c37.png?resizew=194)
(1)求证:
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fb8913f5e42de85e5bc7e67415aab1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】按要求作图
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/29/49a47c49-1626-4cfe-b6aa-b7ad4df1c205.png?resizew=417)
(1)如图1,已知
是
的直径,四边形
为平行四边形,请你用无刻度的直尺作出
的角平分线
;
(2)如图2,已知
是
的直径,点C是
的中点,
,请你用无刻度的直尺在射线
上找一点P,使四边形
是平行四边形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/29/49a47c49-1626-4cfe-b6aa-b7ad4df1c205.png?resizew=417)
(1)如图1,已知
![](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/4b9d54cbbf601f4583659771eb534997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
(2)如图2,已知
![](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/0bd6ffb78dad3375efa3b08ab518553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132c585c2a30e8b4118df453f2130621.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】在数学探究课上,同学们发现改变图(1)中圆周角
的顶点
的位置,可以得到类似
和
这样顶点在圆外和圆内的角.结合数学课上学习的圆周角的概念,对顶点在圆外和圆内的角进行定义:顶点在圆外,两边都与圆相交的角叫做圆外角;顶点在圆内的角叫做圆内角.如图(1)
和
分别是
所对的圆外角和圆内角.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/d79cdc1a-3eee-4756-bcc6-2dc9576e851e.png?resizew=138)
(1)如图(2),点
,
在
上,
为
所对的一个圆外角.
,
分别交
于点
,
.若
,
所对的圆心角为
,求
的度数.
(2)如图(3),当点P在
内时,
是
所对的一个圆内角,延长
交
于点C,延长
交
于点D,若
,
所对的圆心角为
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7274098e5a3b12ce85ac7286f0732c62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f9d1faba756694df00a208fac415ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7274098e5a3b12ce85ac7286f0732c62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f9d1faba756694df00a208fac415ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/dad050c8-e2fa-4ae8-ac25-450f9fb0e971.png?resizew=138)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/a6b6443c-7d16-4e10-a28b-82b76126b586.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/d79cdc1a-3eee-4756-bcc6-2dc9576e851e.png?resizew=138)
(1)如图(2),点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff5c21185c13eae675906dabd3593c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb94bd9eb80fb9f5f02f518bb8f2211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
(2)如图(3),当点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff73892a5566e1eff4955174277e24d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3d921fa160bfa9f74fe51dedfe3413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.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,在等腰三角形
中,
,
,以点
为圆心,
的长为半径作
,直线
与
相切于点
,过点
作
于点
,交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/e3c6538c-c9dd-479b-86ac-55b872896132.png?resizew=134)
(1)求
的度数.
(2)若
的半径为5,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c90da0cd2708481057fe19acebf2ec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/e3c6538c-c9dd-479b-86ac-55b872896132.png?resizew=134)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bc8e50eeccced1d7f3bc52e09a7d03.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b19c646bcb6160197fdf12a9cb31a0d.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在平面直角坐标系中,以点A(0,5)为圆心的圆与y轴交于点P,OB是⊙A的切线,点B为切点,直线BP交x轴于点C.
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986552898363392/2988217236357120/STEM/ae08a0a6-ef61-4300-a2e1-90147e897552.png?resizew=222)
(1)求证:OB=OC;
(2)若CO=2PO,求⊙A的半径及BP的长.
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986552898363392/2988217236357120/STEM/ae08a0a6-ef61-4300-a2e1-90147e897552.png?resizew=222)
(1)求证:OB=OC;
(2)若CO=2PO,求⊙A的半径及BP的长.
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2】如图,
、
是
的切线,
、
是切点,
是
的直径,连接
,交
于点
,交
于点
.
(1)求证:
;
(2)若
恰好是
的中点,且四边形
的面积是
,求阴影部分的面积;
(3)若
,且
,求切线
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/abd13974aebe38eb2a1d744a01ea5aa5.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48626d8a7625f8e46fbd37ca01190036.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a554e03744b5befe9e0939377dafa8a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45239c9310fa2d1f3b30234d333129a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4746df85049d1651d3f6c30212a7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/9be12a69-53a7-49bb-b990-abaf19d22576.png?resizew=155)
您最近一年使用:0次