1 . 如图,
为
的直径,
是
的切线,过点A作
交
于点D,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/abe04e7c-3894-47e1-8093-09306bc62660.png?resizew=143)
(1)直线
与
相切吗?并说明理由;
(2)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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb35997ac448951ef2875162298cb50a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/abe04e7c-3894-47e1-8093-09306bc62660.png?resizew=143)
(1)直线
![](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/be1fbe780030f0f85227d208d704209c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
名校
2 . 如图,
表示一个窗户的高,
和
表示射入室内的光线,窗户的下端到地面的距离
,已知某一时刻
的地面的影长
,
在地面的影长
,则窗户的高
是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/d9732b4f-1150-46fb-99d6-fd5c472f61a1.jpg?resizew=120)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade69192ef448e2e663f613f23fb36d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587feff3337c6bd4a38ae06e35777a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe2c258c468b0ed087067d8e83479ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/d9732b4f-1150-46fb-99d6-fd5c472f61a1.jpg?resizew=120)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-18更新
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258次组卷
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3卷引用:四川省成都市武侯区成都市第七中学高新校区2022-2023学年九年级上学期期中数学试题
四川省成都市武侯区成都市第七中学高新校区2022-2023学年九年级上学期期中数学试题江苏省淮安市盱眙县2022-2023学年九年级下学期期中数学试题(已下线)第5章 投影与视图(单元测试·基础卷)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)
名校
3 . 在如图的正方形格点纸中,每个小的四边形都是边长为1的正方形,A、B、C,D、F,H都是格点,
与
相交于O,
与
相交于E,求
与
的比值.
![](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/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/ec825437-b50c-4153-8750-18f0f5396739.png?resizew=219)
您最近一年使用:0次
2023-01-18更新
|
126次组卷
|
2卷引用:安徽省合肥市第五十中学2022-2023学年九年级上学期期中数学试题
名校
4 . 如图1,在平面直角坐标系中,直线
:
与
轴交于点A,与
轴交于点
,直线
与
轴交于点
,与直线
交于
,
,
.
![](https://img.xkw.com/dksih/QBM/2023/1/8/3148380803153920/3155350575915008/STEM/3ef89e7f60e34cc884fb012e7646d867.png?resizew=463)
(1)求直线
的解析式.
(2)在直线
上是否存在点
,使
的周长为
?若存在,求出点
的坐标,若不存在,请说明理由.
(3)如图2,连接
,将
沿直线
翻折得到
.若点
为直线
上一动点,在平面内是否存在点
,使待以
、
、
、
为顶点的四边形为菱形,若存在,求出
的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d501afbd7542f2f724b658edf39af4.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/d1a682ceca64f8b53216746fb76f3e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a8e667c8ba7ea1de96ccadd06f86a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84acb42778406c1a60d818f6ca760366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed40211c2c72b10bba095dfc8e4200c9.png)
![](https://img.xkw.com/dksih/QBM/2023/1/8/3148380803153920/3155350575915008/STEM/3ef89e7f60e34cc884fb012e7646d867.png?resizew=463)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(2)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27567d43c5b91382ee3d7ca708ee422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a4b47633857e9262eba75f69a0d298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45253211c79ef3eef7384f5b5b2eca64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
5 . 正方形
中,E,F分别是
,
上的点,连结
交对角线
于点G,若
恰好平分
,
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6a23d521606a35298bbf147f7f830c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6a3f3d4ba03ea5a48d44be26727f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefd4b2184d5660c6e44cfd2ee099d85.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/c8ad141a-7664-422e-a75f-c91a96bb39c1.png?resizew=217)
您最近一年使用:0次
6 . (1)解方程:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41527a0e6cee74e1177777a168ec81de.png)
(2)如图在三角形
中,
,已知
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41527a0e6cee74e1177777a168ec81de.png)
(2)如图在三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d021981c03e75b1a246d899dcc64656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c85409e4c685f7dbadae2de3cf9a09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/22/a458b372-a856-41fe-8e76-534a3c1bd42d.png?resizew=163)
您最近一年使用:0次
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7 . 如图,在菱形
中,
交
的延长线于点,连接
交
于点,交
于点,连接
.
![](https://img.xkw.com/dksih/QBM/2023/1/11/3150430773567488/3153968341565440/STEM/7fc3aae0b0cb4a5ba5cd4737fb2612ab.png?resizew=201)
(1)求证:
;
(2)若菱形
的边长为2,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/2023/1/11/3150430773567488/3153968341565440/STEM/7fc3aae0b0cb4a5ba5cd4737fb2612ab.png?resizew=201)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a60fbe7a4ffbdd579291fe39f40b49b.png)
(2)若菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eee296a7d9fba487f1485c61580196f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
您最近一年使用:0次
2023-01-16更新
|
498次组卷
|
3卷引用:辽宁省辽阳市第一中学2022-2023学年九年级上学期学情调研(二)数学试题
辽宁省辽阳市第一中学2022-2023学年九年级上学期学情调研(二)数学试题辽宁省辽阳市第一中学2022-2023学年九年级上学期第二次月考数学试题(已下线)专题34 利用相似解决四边形问题——几何综合-2023年中考数学二轮复习核心考点专题提优拓展训练
名校
解题方法
8 . 如图,在
中,
,
,
.动点P从点C出发,沿
以每秒3个单位长度的速度向终点A匀速运动.过点P作
的垂线交射线
于点M,当点M不和点B重合时,作点M关于
的对称点N.设点P运动时间为t秒(t>0).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/c4b00fc4-422c-4e70-943a-e44f399784a1.png?resizew=180)
(1)求
的长;
(2)当点M在边
上时,求
的长;(用含t的代数式表示)
(3)取
的中点Q.
①连接
、
,当点M在边
上,且
时,求
的长;
②连接
,当
时,直接 写出t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/c4b00fc4-422c-4e70-943a-e44f399784a1.png?resizew=180)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)当点M在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(3)取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
①连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6513172e1c23b2eb6c5fbab7def1cfc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3171b3d11c6f4619e189677345357508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb751ea7e3904a55732e12e2c0e91c20.png)
您最近一年使用:0次
2023-01-15更新
|
221次组卷
|
8卷引用:2022年河北省石家庄市第四十一中学4月中考模拟考试数学卷
2022年河北省石家庄市第四十一中学4月中考模拟考试数学卷河北省石家庄市第十九中学2022-2023学年九年级上学期期中考试数学试题(已下线)2022年河北中考数学一模几何综合题2021年吉林省长春市初中毕业学业考试网上阅卷模拟练习数学试题(已下线)专题05 四边形-5年(2018-2022)中考1年模拟数学真题分项汇编(河北专用)河北省石家庄市第十九中学2022-2023学年九年级上学期1月期末考试数学试卷2023年河北省唐山市路南区中考二模数学试题河北省石家庄市第二十三中学2023-2024学年九年级上学期月考数学试题
名校
9 . 如图,在
中,
,
,下列结论一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6ffa9263b13fb5a51434e199619f00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f014b2bcd9088d672e4e36581a22fa8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-15更新
|
500次组卷
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10卷引用:辽宁省铁岭市昌图县2021-2022学年九年级上学期期末数学试题
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10 . 如图,在
中,
于点G,点F是BC边上一点,且
,点D从点A出发,沿AC的方向匀速运动,速度为
;同时点E由点B出发,沿BA的方向匀速运动,速度为
.连接EF、ED,设运动时间为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/16/29b80885-dfde-4066-b7f3-e6d6dd186cbf.png?resizew=197)
(1)求当t为何值时,点E在线段BF的垂直平分线上?
(2)设四边形CDEF的面积为
,求y与t之间的函数关系式;
(3)是否存在某一时刻t,使
?若存在,求出t的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2067746da6281c9b1950cf02f3da4662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b7476db7a68b74128cbf9520fc57fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ba95116dc790b935d65bf540799cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4bf2ed4e49655ce765ba6ffbb6c7d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2aa6dc066a792f80744e9c7f2d5fa4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/16/29b80885-dfde-4066-b7f3-e6d6dd186cbf.png?resizew=197)
(1)求当t为何值时,点E在线段BF的垂直平分线上?
(2)设四边形CDEF的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d740004cfdade4c185f722dadc27e15.png)
(3)是否存在某一时刻t,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf9b8ea43be24fc22686c4428c5dad6.png)
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