名校
1 . 在平行四边形
中,
,
,
,点
是
上一点.
,
从点E出发,沿折线
以每秒3个单位长度的速度运动,到D停止.连接
,将线段
绕点E顺时针旋转
得到线段
.连接
.设点P的运动时间为t秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/85cb1bb0-a83f-4c44-bee4-441384a62a84.png?resizew=225)
(1)用
表示线段
的长度;
(2)连接
,求
的值;
(3)当点
在平行四边形
的对角线上时,求
的值;
(4)连接
.当
分线段
为
的两部分时,直接写出t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e0c5cb53fd85b7a23f0580df6bb49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59517514a2f25614e095438bac0c3d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d59b6609392e5c8ded35e19a0e9dbe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/85cb1bb0-a83f-4c44-bee4-441384a62a84.png?resizew=225)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2acc3d97d68adaa0869cb814b5d76337.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(4)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
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2 . 如图,在菱形中,点
在
边上,连接
和
,若
,则
的长为
您最近一年使用:0次
名校
3 . 如图,平面直角坐标系中一条圆弧经过网格点A,B,C,点A在y轴上,点B的坐标为
,则该圆弧
的长为 ________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8c987ef33b637489141ce7dee6162e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/4a599dc2-f582-4278-9bcc-5b7f757fce74.jpg?resizew=187)
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4 . 如图,在平面直角坐标系中,点A在y轴上,且,点M为x轴上的一个动点,连接
,将线段
绕点A逆时针旋转
至线段
,连接
,则
的最小值为
您最近一年使用:0次
名校
5 . 如图1,和
都是等边三角形.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e8a0c5f4a95fb2699860fd3f638737e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e4b3716628ee426bc145f59b8cedef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b52be86481e4373b6c03df9ac0fdb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e4b3716628ee426bc145f59b8cedef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
您最近一年使用:0次
6 . 正方形与等边三角形
如图,P是
上一个动点.
(1)P在何处时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5b61e25ec964d185735c58f2efc8d0.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5b61e25ec964d185735c58f2efc8d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ddf2ae04265e2cbf674ab40bba45c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
7 . 如图,在
和
中,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed3b8636ca0d38b6f067f1aa00603dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21bfc82e4e534f6261bfb83c40e93d04.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/a0efec16-e442-429d-9fd5-f9e462b552ec.png?resizew=126)
您最近一年使用:0次
2024-03-26更新
|
75次组卷
|
2卷引用:陕西省咸阳实验中学2023-2024学年九年级下学期月考数学试题
名校
8 . 如图,正方形
的边长为4,点
分别在边
上,且
平分
,连接
,分别交
于点
是线段
上的一个动点,过点
作
,垂足为
,连接
.有下列四个结论:①
垂直平分
;②
的最小值为
;③
;④
.其中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf3c19de60555f4928d1ef1ce99a20e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f56f318087fb698339caacaff1e956db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c00abe2cd9cb334d9ffcdf992c7ab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f0d14209ea7c9056268be636afcfe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9887e1ff61308713287d592c8e8d942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bb1548ddc0e5536a35b1bd78c4e7cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/569b3d6a23459e586ead541d8c63d636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d5a503241c275b7aee8a2eefcceaad.png)
A.①② | B.②③④ | C.①③ | D.①③④ |
您最近一年使用:0次
9 . 如图,D,E分别在等边三角形
的边
的延长线上,
,
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/4015b4f5-70d5-4432-946a-6747b5274681.png?resizew=129)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48df51a712bcc7c5815575fdbf346a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d169cfcb83f5307bf4fc9b86796e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b9f1e56f22fc0c3c005ec7fc524151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d19f963f7c803bcfcbb265ec6d4304.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/4015b4f5-70d5-4432-946a-6747b5274681.png?resizew=129)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 如图,
和
都是等腰直角三角形,
,D是BC上一点,连接CE.若
,
,则DE的长度为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26813466e2ee49a493881a4384fc8748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cedd51383f8f047f565191b128cec637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0268d04b9dea7629af27af9a0285a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/347b9dc8-f022-4f36-890f-5fdb552b0cce.png?resizew=188)
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