1 . 如图,在
中,
,以该三角形的三条边为边向外作正方形
,正方形
和正方形
,给出下列结论:①
.②
.③过点B作
于点I,延长IB交AC于点J,则
.④若
,则
.其中正确的结论个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea61ea3f3cf0e3001a5094960e9dc11f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2de15162b13ba943f8da2498580cf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572cd39e40ae29f64f10c487d9daecc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16cfdcd754e646ee2f461dd2b04bfb0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ca62374287afd5821e476e63f0aa77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f991da887d7e027b5dfc5e07c39a39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb99d785938942dfa41e12bc4952bf7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/4ed842de-6ec0-4687-bd2a-29479425e630.png?resizew=157)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2 . 如图,在平面直角坐标系中,直线
分别交
轴,
轴于点
,直线
,垂足为点
为线段
上一点(不与端点重合),过点
作直线
轴,交直线
于点
,交直线
点
.
(1)求线段
的长;
(2)当
时,求点
的坐标;
(3)若直线
过点
,点
为线段
上一点,
为直线
上的点,已知
,连结
,
,求线段
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0c03f142eb32f553465728efc42cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0a3eb2c6ae837f6b0b948c882fc2ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771b610e4ddefa739a985d1e5462ce5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa69fd8445d01c98634c2e885b47d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fc01344af3800a30595b9403086516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/8927eba2-5d1b-4c05-a30f-00a00fc1aea1.png?resizew=398)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe6d389a6c448d92b79d89bc9e8489f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b179495d07e4c38a8fccee2b0948dc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d961216229afbd21c0e66e91fdbfe246.png)
您最近一年使用:0次
3 . 我们知道在解与角平分线有关的问题时,通常过角平分线上的一点作角两边的垂线,构造全等三角形,请完成下列问题.
【初步探究】(1)如图 1,
,
平分
, 点 C 是射线
上一点,
, 且与
,
分别交于点 D, B, 求证:
.
【类比探究】(2)如图2,其他条件不变,将图1的
绕点C逆时针旋转使点 D落在
的反向延长线上. 请探究线段
,
和
之间的数量关系,写出结论并证明.
【拓展应用】(3)如图3,其他条件不变,将图1的
绕点C顺时针旋转使点 B落在
的反向延长线上. 请直接写出线段
,
和
之间的数量关系. (不用证明)
【初步探究】(1)如图 1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7231ec83386010f305e121ce60e23d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7305de9211785b826823153897b17517.png)
【类比探究】(2)如图2,其他条件不变,将图1的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.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/03902478df1a55bc99703210bccab910.png)
【拓展应用】(3)如图3,其他条件不变,将图1的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.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/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/fc904144-2059-4ab6-bf02-2ce37d9dfaf2.png?resizew=484)
您最近一年使用:0次
4 . 如图,在长方形
中,
为等腰直角三角形,且
,点
在线段
上,点
在线段
上,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83af576f9d1784d0ca21f3567c201d42.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7521601ac1fbc4a52d4fe44be9c8e88c.png)
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6783d3cea667c670e5bf7282aca3f293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83af576f9d1784d0ca21f3567c201d42.png)
您最近一年使用:0次
2024-03-02更新
|
162次组卷
|
3卷引用:浙江省杭州市上城区2023-2024学年八年级上学期期末数学试题
5 . 如图,在
中,
,
.点
在
边上(不与点
,
重合),连接
,过点
作
的垂线交过点
且垂直于
的直线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/cdbc3968-ba16-47a4-8393-716b6870fdf9.jpg?resizew=192)
(1)求证:
;
(2)试探索线段
,
,
之间有何数量关系?写出你结论,并证明;
(3)若点
在
的延长线上,那么线段
,
,
之间又有何数量关系?请直接写出你结论,不用证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/cdbc3968-ba16-47a4-8393-716b6870fdf9.jpg?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4253b380bfabd7dbde874b3e9cafb76.png)
(2)试探索线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
2024-03-01更新
|
116次组卷
|
2卷引用:四川省成都市成华区2023-2024学年八年级上学期期末数学试题
6 . 如图,点
在
上,
,垂足为点
,连接
,
.
(1)如图1,若
,则
______
;
(2)如图2,作
,垂足为点
,求证:
;
(3)如图3,在(2)的条件下,连接
并延长,交
于点
.
①求证:
;
②若
,
,求半径
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b378a2df371f5ff1815c03a84f571229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771b610e4ddefa739a985d1e5462ce5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/4abfa9f7-f8d1-4fd9-9eee-3ea9c4cfb9b1.png?resizew=355)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966e5c0edb757b2f221491913b5bf0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4e4ca6263c207e03771cdc28948605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)如图2,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/affbe2d2ced2303d8c3d183746d0bcf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47038327ea97a335194ed68ed8b8e2db.png)
(3)如图3,在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b30a8f02b0532e55378662ebf23847.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6609cc372831939ad4beb3770b0b0ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73223f86437fe0d0c5bfa0230842362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
您最近一年使用:0次
7 . 在矩形
中,点
是
的中点,连接
.
是线段
上一点,
的延长线交
于点
.
(1)如图
,若
,且
.
求证:点
是
的中点;
(2)如图
,若
,当
时,求
的值(用含
的代数式表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4eccda4edcee29a5f15609e85106df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/ee63739d-a018-4ae0-b458-9c0b2e0d4127.png?resizew=382)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76859801af1ca1156c70c7700543f35d.png)
求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a320a6a242be91347d1b241f6313251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d7fd385b71edb0626bd33664854dc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a42217f8b8339a3a6953ce84509ff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2024-02-27更新
|
88次组卷
|
2卷引用:浙江省丽水市2023-2024学年九年级上学期期末数学试题
8 . 已知点
,点
,且a、b满足
,
,
分别平分
,
交x轴于点E,交y轴于点F,
交
于点P.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/8153a16a-6a37-4796-ad2d-5c52fd4cb951.png?resizew=309)
(1)如图1,点A,点B的坐标分别为_______,______,
的度数为____;
(2)如图2,过点P作
交x轴于点M,连接
.
①求证:
;
②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6991563453cd366d99513c393d1ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7255cbfbc86408b7cd865e89e5de0fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e152c9148b0b54d6b96535df1408ddca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3daae8ec60b2b1f7577dee687247cebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f9341d51c827a29a4a0b0b3dded16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/8153a16a-6a37-4796-ad2d-5c52fd4cb951.png?resizew=309)
(1)如图1,点A,点B的坐标分别为_______,______,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b1d3ba8a6c2acb3540714e99481f8e.png)
(2)如图2,过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3706202a81b9332b7dadc3dbf90fedac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149fdb10a33771c505f0ff104f5edcd9.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e951458b0d6fee1ef1c7fc8a3a9a776e.png)
您最近一年使用:0次
9 . 如图1,在矩形
中,E为
延长线上一点,且
,
交
于点F,
.
(1)求证:
;
(2)求证:
;
(3)如图2,G为
上一点,
,
相交于点O,连接
.若
,且
,求
的长.
![](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/ce25e95729c34d26e482512d36dd89b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c51c25b65a37b676ae3c3b71c29f9b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/4356d7aa-bd53-4134-a291-4938a156c532.png?resizew=280)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d390df2733a81db86f0556dba8af0f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db827cbb22a564c4dbaa6e1c78c6dae5.png)
(3)如图2,G为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482d66b7dddfcb7db44c746f11a32ed9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8416b9c7e23d5f090b08c1adaadffc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
10 . 等边
中,
于点
,点
为
边上一动点,连接
,点
关于直线
的对称点为点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/0e2768bb-593f-48bc-a280-beeef96717fd.png?resizew=459)
(1)如图1,点
恰好落在
的延长线上,则求
______
;
(2)过点
作
交
于点
,连接
交
于点
.
①如图2,试判断线段
、
和
之间的数量关系,并说明理由:
②如图3,直线
交
于点
,连接
点运动的过程中.当
取最小值时,请直接写出线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1ddf6c0c55a38dcb6750bba4e37341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cae003af00d9a4a443168a520360f7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/0e2768bb-593f-48bc-a280-beeef96717fd.png?resizew=459)
(1)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b753dbb5a670dd4f5e23bb919e44dda2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afedac49ce38f25e0a73e579133afe5a.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/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
①如图2,试判断线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
②如图3,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74560a1dfdf34011663a5f4252eb7fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767dbeffdf9182a42cce2a544a9f09cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
您最近一年使用:0次