如图,
是
的外接圆,
是
的直径,点
在
上,
,连接
,延长
交过点C的切线于点E.
![](https://img.xkw.com/dksih/QBM/2023/1/9/3149255929896960/3153475034365952/STEM/5e1825c291bd40a5bbf733429f2d88b5.png?resizew=168)
(1)求证:
;
(2)求证:
;
(3)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212bfbd5575772ca36d6fc3e7b246e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://img.xkw.com/dksih/QBM/2023/1/9/3149255929896960/3153475034365952/STEM/5e1825c291bd40a5bbf733429f2d88b5.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d61f97529ed6945c4fa6219867189a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b2cc1d0bfd22c88286880b9da1f6f4.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
22-23九年级上·河南信阳·期末 查看更多[2]
更新时间:2023-01-15 19:04:17
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图四边形
中,E在
上,
,且
.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/bf74857b-b4f5-4bf6-9982-2745aa555fb1.png?resizew=196)
(1)
;
(2)
是
的角平分线.
![](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/f70bd0390d06c69f11a9a486d30e5bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3d2d3643a9579f2c693ef86909441e2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/bf74857b-b4f5-4bf6-9982-2745aa555fb1.png?resizew=196)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727f51e85f66e3cc30875d1bbcd65374.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】在等边
中,点
在
边上,点
在
的延长线上,
(如图1)
![](https://img.xkw.com/dksih/QBM/2020/3/3/2411843168108544/2412344901476353/STEM/bbda1295-1361-4746-923a-1074b23879c0.png)
(1)求证:
;
(2)点
关于直线
的对称点为
,连接
,
.
①依题意将图2补全;
②证明:在点
运动的过程中,始终有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518586d91b63569fc317b323835a0c2e.png)
![](https://img.xkw.com/dksih/QBM/2020/3/3/2411843168108544/2412344901476353/STEM/bbda1295-1361-4746-923a-1074b23879c0.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c2e89f5080b4c9733397ad09023530.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
①依题意将图2补全;
②证明:在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78554a129a5c195026b2cef093ba12ad.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,
是
的切线,
,
是
的弦,且
,垂足为E,连接
并延长,交
于点P.
;
(2)若
的半径
,
,求线段
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/d50703c46b6153945d718b198f03b4b5.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/9d78abbad68bbbf12af10cd40ef4c353.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0c63b059ba911da3429c190f40d6a9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8314bf44fd67afda08134a89cff2de72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.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,
是
的直径,点
在线段
的延长线上,且
,
切
于点
,
为
上一点,
交
于点
,
,
交于点
,连接
,
.
![](https://img.xkw.com/dksih/QBM/2019/5/7/2198475160092672/2199851235041280/STEM/4809ec2388ba45d4abf84cbd0faa4c62.png?resizew=173)
(1)求证
;
(2)若
,求证:
;
(3)在(2)的条件下,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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc1fc39fa72c334a321129d893899a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.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/3d97cdc586744d208b6f69c9813af977.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/f53330c107f8245290a5a42c3d356acd.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2019/5/7/2198475160092672/2199851235041280/STEM/4809ec2388ba45d4abf84cbd0faa4c62.png?resizew=173)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ecd96adaec63c5bbd65f59f885ecfd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e2267c84394668eff2e9f5918de4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d56f7f176b5f794fd41ed9836c1d91.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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,BC是圆O的一条弦,过点O作OM⊥BC于点M,延长MO交圆O于点A,连接AB,AC,∠ABC的平分线交AM于点D,交圆O于点F,并与过点A的圆O的切线交于点G.
(2)连接AF,若AB=10,BC=12,求AF的长.
(2)连接AF,若AB=10,BC=12,求AF的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
真题
【推荐2】如图,AB为⊙O的直径,C为⊙O上的一点,AE和过点C的切线CD互相垂直,垂足为E,AE与⊙O相交于点F,连接AC.
;
(2)若
,
.求OB的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a852c13de65877be1f43ac1f88f179d7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b91dc345be51a286768fd52ebc3f3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/510effd1d1b506beae461542bfbdd218.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】已知矩形ABCD,把△BCD沿BD翻折,得△BDG,BG,AD所在的直线交于点E,过点D作DF∥BE交BC所在直线于点F.
![](https://img.xkw.com/dksih/QBM/2018/8/28/2020024235073536/2021362608971776/STEM/93eab37a53ed4db3a87e25efec366bc2.png?resizew=233)
(1)如图1,AB<AD,
①求证:四边形BEDF是菱形;
②若AB=4,AD=8,求四边形BEDF的面积;
(2)如图2,若AB=8,AD=4,请按要求画出图形,并直接写出四边形BEDF的面积.
![](https://img.xkw.com/dksih/QBM/2018/8/28/2020024235073536/2021362608971776/STEM/93eab37a53ed4db3a87e25efec366bc2.png?resizew=233)
(1)如图1,AB<AD,
①求证:四边形BEDF是菱形;
②若AB=4,AD=8,求四边形BEDF的面积;
(2)如图2,若AB=8,AD=4,请按要求画出图形,并直接写出四边形BEDF的面积.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在扇形
中,圆心角
,半径
,点P为
上一点,连接
,过点A作
于点Q.
的长.
(2)当点A、Q、B在同一条直线上时,求扇形
的面积.
(3)连接
,则线段
长的最小值为 .
(4)延长
,交直线
于点C,若点Q为线段
的三等分点,直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88d63a6703eef4f9673131be9e9cf25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
(2)当点A、Q、B在同一条直线上时,求扇形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828fcf6ed16b5dae1b572d471f5ed7a7.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
(4)延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次