名校
1 . 在
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/735ddb88-7c4d-4baa-9ee7-1d972de49b8d.png?resizew=481)
(1)如图,当
时,取
上一点D,取
上一点E,连接
,
.若
平分
,
,求
的长;
(2)如图2,当
时,取
上一点F,取
上一点G,连接
,
,延长
至点H,连接
.已知
,
,求证:
;
(3)当
,点P在
内部时,连接
,
,
.当
的值最小时,请直接写
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/735ddb88-7c4d-4baa-9ee7-1d972de49b8d.png?resizew=481)
(1)如图,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dc2d2dd56fcc67698c45a6e0e48f80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e343510d82161bb1da2f17403f5d1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5ac003c5ec5bd202185f5beed79be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373fe796c3696d9d9bf5f335d25caffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee4cd08cd69823d63b2375499f11677.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8257f74f5cec5062fdb21ea411391ae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f694da9df04a7771740f4f7afae453c.png)
您最近一年使用:0次
2 . 在
中,
,D是边
上一动点,E是
外一点,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/2/789875d8-99f4-4a59-8079-e437bb9870e6.png?resizew=388)
(1)如图1,
,
,若
,求
的度数;
(2)如图2,
,
,过点D作
交于点F,若
,求证:
;
(3)如图3,
,延长
交
的延长线于点F,
交
于点G,点D是直线
上一动点,将
沿
翻折得
,连接
,取
的中点M,连接
,若
,当线段
取得最大值时,请直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2903bfe4e35f6d65673b8408e035885.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/2/789875d8-99f4-4a59-8079-e437bb9870e6.png?resizew=388)
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28971fe3e3f9d3849400e98b46fc3ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42218a68301d770accaaefb96b19f8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf2557b3dfbbfb82d3d1564029407cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28971fe3e3f9d3849400e98b46fc3ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fdcbc4db3439b5f1fcd5a3acfc98ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa30a9ee227af2b387cf6e028c20d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca164a884ffb5183ea12bbd7b4f14a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/054581f6dbfb9c597b7e799e941954b2.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384ec088e7f8dea070998e6e8e2d9b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72161ad6b6ef0f88183f69f81bde9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1612a0a4df3353fba4da6678c6a0cf4b.png)
您最近一年使用:0次
2024-01-21更新
|
250次组卷
|
2卷引用:重庆市沙坪坝区2023-2024学年九年级上学期期末数学试题
名校
3 . 已知四边形
是平行四边形,
,
,
,
为
延长线上一点,
,动点
同时从点
出发,点
以每秒5个单位长度的速度沿折线
方向运动,点
以每秒3个单位长度的速度沿折线
方向运动,当点
到达点
时,两者都停止运动.设运动时间为
秒,点
的距离为
.
关于
的函数表达式,并注明自变量
的取值范围;
(2)在给定的平面直角坐标系中画出这个函数的图象,并写出该函数的一条性质;
(3)当
时,请直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78192b9e9d4e38175e840233749443bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd90bfa2987b84df430498021d5f648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905c7dbd4a489c232f4c7ceb05479ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620fd368efb51a5ae90c0f3e276704d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40403d3739ef726e378b2df7b07adece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8279c3f25a9f99e4d2fbe62090633d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)在给定的平面直角坐标系中画出这个函数的图象,并写出该函数的一条性质;
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b50ca7aa1a0ae93fa44202f7ffd8e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
2024-01-21更新
|
747次组卷
|
3卷引用:重庆市沙坪坝区第一中学校2023-2024学年九年级上学期期末数学试题
重庆市沙坪坝区第一中学校2023-2024学年九年级上学期期末数学试题 重庆市万州第二高级中学2023-2024学年九年级下学期第一次月考数学试题(已下线)中考重点05 动态几何+函数图像(6题型+满分技巧+限时检测)-2024年中考数学【热点·重点·难点】专练(重庆专用)
名校
4 . 如图,在
中,
,
,
,点
是
边上一点,连接
,将
沿直线
折叠后,得到
,
交
边于点
,若
,则
的长为______ .
![](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/62eccb33ea66c03222468628f74d8c56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c3a59c194a2365abcd14cc3f0e6d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/020ebe1219437129358b986eb9e70bbf.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/f4ce1f3c93316b5fe990ae24bf4e2258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
您最近一年使用:0次
2024-01-20更新
|
786次组卷
|
3卷引用:重庆市沙坪坝区南开中学校2023-2024学年九年级上学期期末数学试题
重庆市沙坪坝区南开中学校2023-2024学年九年级上学期期末数学试题(已下线)中考热点08 翻折填空类(5题型+满分技巧+限时检测)-2024年中考数学【热点·重点·难点】专练(重庆专用)28.2.1解直角三角形
5 . 如图,在平面直角坐标系中,点
在第二象限,过点B作
轴于点
与反比例函数
图像交于点E、F,连接
,若
为
的中点,四边形
面积为11,则k的值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f07aeaad7ee076170141958bc50c281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d913613e7cffb4f9a60af741476e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9051a162a6d0d12cd786a5cf65495a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db0b84c4bba1e131db2083d496cc48e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/4184dc14-27df-4f42-bdf2-0e8f37915722.png?resizew=157)
您最近一年使用:0次
名校
6 . 如图,在平面直角标系中,抛物线
与x轴交于点A和点
,与
轴交于点C,对称轴为直线
.
(2)如图1,点P是直线
上方抛物线上的一动点,过点P作直线
轴,交直线
于点D,过点D作直线
,交y轴于点B,求
的最大值及此时点P的坐标;
(3)在(2)中
取最大值的条件下,将该抛物线向右平移1个单位,向下平移2个单位,平移后的抛物线与过点
的直线
交于M,N两点,点N关于y轴的对称点为
,直线
交y轴于点Q.试探究:
的面积是否为定值?若是,请求出
的面积;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c34f23f45d511636fb46dc31913103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
(2)如图1,点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b32f59522eea44b24cdd4c2bc0406e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4caf034013a9e3d7a2072ac7210cecc2.png)
(3)在(2)中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4caf034013a9e3d7a2072ac7210cecc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79de5476df20ce528718f34c683219f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22bd12d5b2ee9c46f85a672d1261fbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b1ba4307cfde9b424d468bfcdf6c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef83a7b6c9604931ce6007cfafe8d3d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adccd1dd14171c8c29d4a3836728c0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adccd1dd14171c8c29d4a3836728c0f.png)
您最近一年使用:0次
2024-01-17更新
|
802次组卷
|
2卷引用:重庆市北碚区西南大学附属中学校2023-2024学年九年级上学期期末数学试题
名校
7 . 如图,在
中,
,
,若
的周长为4,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6c6426f8f8826f3f15e20fda9e1cfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.5 | B.6 | C.9 | D.12 |
您最近一年使用:0次
2024-01-17更新
|
559次组卷
|
4卷引用:重庆市北碚区西南大学附属中学校2023-2024学年九年级上学期期末数学试题
名校
8 . 如图,
和
分别位于
两侧,点E为
中点,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/1ba5be3f-3e4c-4266-bc05-615ea518daf1.png?resizew=442)
(1)如图1,若
,
,
,求
的长;
(2)如图2,连接
交
于点F,在
上取一点G使得
,若
,
,
,猜想
与
之间存在的数量关系,并证明你的猜想;
(3)如图3,
是以
为斜边的等腰直角三角形,若
,
,请直接写出当
取最大值时
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/1ba5be3f-3e4c-4266-bc05-615ea518daf1.png?resizew=442)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3948450b1091640e5d34943eb05f405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ad919a6c21e599494997a6d0428b95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)如图2,连接
![](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/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c669be0e3706f11b6e7f94bb7510e53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a87efa1454c6082c9168c66b5a129f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8adaf66bf642e8b8938dd344ac3febed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)如图3,
![](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/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d7d78df837aca94a0f79f2982a4f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
您最近一年使用:0次
9 . 如图所示,在正方形
中,
是
上的点,且
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/a9d462cb-8803-4fdf-8f78-72c9ce723613.png?resizew=117)
(1)
与
是否相似?为什么?
(2)试问:
与
有什么关系?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/aefa2a38416cea94086912c4a4cc4887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/a9d462cb-8803-4fdf-8f78-72c9ce723613.png?resizew=117)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41984f53bb280ba8b5ac00a52ce2825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f09c7b26d991c5ed6565efd0ec1bcd.png)
(2)试问:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
名校
10 . 如图,在
中,
,
交
于点
,
为线段
上一动点,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/b8ac24e4-3314-403d-89bc-e30ec9efaf85.png?resizew=358)
(1)如图1,连接
,若
是
的角平分线且
时,求
的度数.
(2)如图2,将线段
绕点
按逆时针方向旋转
,得到线段
,连接
交线段
于点
,连接
,若点
为线段
的中点,求证:
.
(3)如图3,在(2)的基础上,若
,将
绕点
顺时针旋转
角度
,旋转后
对应
,点
对应的点为
,连接
,
,
.旋转过程中,当线段
与线段
存在交点
且
时,记
;当
取得最小值时,记为
.请直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70734a8e672376bb0bd1522e229f86a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/b8ac24e4-3314-403d-89bc-e30ec9efaf85.png?resizew=358)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df538ff73340b0e910d7a8c9131947d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45aa9dc428cdd15252b9378fe07b8baf.png)
(2)如图2,将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb6a9ada79d39a343d2450cd9d88c99c.png)
(3)如图3,在(2)的基础上,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7832c6a8ee2d1f6b1304ee750705c047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a9ec45721f7b4d1c99917ac0d970f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d060620ac20d752ea5c5ba361d41910e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a9ec45721f7b4d1c99917ac0d970f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462fb367e3bda9ff675bf846b72167a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10e10052bd862b0323ae961deacb353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d42a692432a3ddb16b8057af17a162d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f02a9b0c597841bdcc4c55ce1c492de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c3dce5890a21e4486941062ff0997c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e16d2e96f81ee66c9ad2f3bf5d3e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac88594b7533dd02ef1fe9678aeecd8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0810ae74153f61dab8ba53f3ec25828.png)
您最近一年使用:0次