1 . 如图1所示,在
的网格中,每个小正方形的边长均为1,小正方形的每一个顶点叫做格点,
的顶点都在格点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/3e068269-bf3d-44bf-b9d0-7a614278c48c.png?resizew=282)
(1)图1中,作
的高
;
(2)图2中,已知
,找到格点
(不与点
重合),使得
;
(3)图3中,在线段
上找一点
,连接
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954253b16a82489bb0e152543428c68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/3e068269-bf3d-44bf-b9d0-7a614278c48c.png?resizew=282)
(1)图1中,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
(2)图2中,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0493be0cd8043408f4b8162df5958f1a.png)
(3)图3中,在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47df532f0d3446d7fc7ee4b501c9ca9a.png)
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2 . 如图,在
中,
.若
,则
的面积为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc777e1588d7af3cf6b97fea706884f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92d1ef9eedd6e49d5e470e93289daf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/b14b91cf-ed1d-4dae-97de-f2d0ff13a047.jpg?resizew=151)
您最近一年使用:0次
2024-01-16更新
|
101次组卷
|
2卷引用:吉林省松原市2023-2024学年九年级上学期期末数学试题
3 . 【感知】小明同学在学习相似三角形时遇到这样一个问题:
小明发现,过点
作
交
于
,可证明
,得到相关结论后,再利用相似三角形的性质即可得到问题的答案.下面是小明的部分证明过程:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/79e71c6d-1ae0-4a65-8b4d-89afb4be0e9b.png?resizew=536)
解:如图①,过点
作
交
于
,则
,
,
∵
是
的中点,
∴
,
∴
,
∴
,
∴
,
∵
是
的一个三等分点,且
,
∴
,
∴
,
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f1b0358987a2bf628d25df3c280150.png)
请你补全余下的证明过程.
【尝试应用】
如图②,在
中,
为
上一点,
,连结
,若
,交
、
于点
、
.若
,
,
,则
的长为______.
【拓展提高】
如图③,在平行四边形
中,点
为
的中点,点
为
上一点,
与
、
分别交于点
、
,若
,则
的值为______.
如图,在![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb9e49c1a0bb7db8b808b805d08c499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0f36c4d133da7a2b7f6665a46fd325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f1b0358987a2bf628d25df3c280150.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/79e71c6d-1ae0-4a65-8b4d-89afb4be0e9b.png?resizew=536)
解:如图①,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb9e49c1a0bb7db8b808b805d08c499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0f36c4d133da7a2b7f6665a46fd325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01f773ee1d4280f9ef5278c6738c92ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f317a9a9b7d95f827593f72b223d26.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/532aece6cfd67e2a97977eed978dbf2b.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70e9557de903cfe3d095cb821abcff6.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78eb5b388afc0437ec7805c5608ebe7.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ac6111180757359050b6af741d12dc.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/aaa61d9f35c4160f319e77be88c7f033.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc63ac949336bc7f62634f359a8593c9.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c0e406072a645180d49c3295c73c0.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f1b0358987a2bf628d25df3c280150.png)
请你补全余下的证明过程.
【尝试应用】
如图②,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c51c25b65a37b676ae3c3b71c29f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21d8e7af78693e5da7957c8034e8bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
【拓展提高】
如图③,在平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/c14cbce0fef923b14f40d18c0c15ef23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96690c112163231c015adebd5f138380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064f3aa6e912fd41811bee2bf9ea1aba.png)
您最近一年使用:0次
4 . 如果在
中,点
、
、
分别为边
、
、
的中点,
,
,
,那么
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6f3d14d4c0d628472a0b5dbd603f53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
A.![]() | B.15 | C.30 | D.60 |
您最近一年使用:0次
5 . 学习了相似三角形相关知识后,小明和小刚想利用“标杆”测量教学楼的高度.如图,小明站立在地面点
处,小刚在点
处坚立“标杆”
,使得小明的头顶点
、杆顶点
、楼顶点
在一条直线上(点
也在一条直线上).已知小明的身高
米,“标杆”
米,又
米,
米.
(1)求教学楼
的高度为多少米(
垂直地面
)?
(2)小明站在原来的位置,小刚通过移动标杆,可以用同样的方法测得教学楼
上点
的高度
米,那么相对于第一次测量,标杆
应该向教学楼方向移动多少米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f1412368658f0583e96358d46fcfc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb469e8e6d3a40e0a2f4de0221fb448b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cef5f71528e58757f7bf215062adb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbb0f724538e455642d8ac25046b603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c545be1051b20aea348bc99505c27022.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/454ae518-0e4c-4562-9af8-509df6f38b12.png?resizew=440)
(1)求教学楼
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)小明站在原来的位置,小刚通过移动标杆,可以用同样的方法测得教学楼
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec130ef1e52a73c0d0aaf9f59effde8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2024-01-14更新
|
129次组卷
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14卷引用:吉林省白城市大安市2022-2023学年九年级上学期期末数学试题
吉林省白城市大安市2022-2023学年九年级上学期期末数学试题河北省沧州市任丘市2021-2022学年九年级上学期期末数学试题山东省淄博市临淄区2021-2022学年八年级下学期期末数学试题上海市宝山区2021-2022学年九年级上学期期中数学试题(已下线)专题4.2.4 相似三角形的应用(专项训练)-2022-2023学年九年级数学上册《同步考点解读·专题训练》(北师大版)(已下线)第01讲相似形、比例线段、相似三角形(3大考点12种解题方法)-2022-2023学年九年级数学考试满分全攻略(沪教版)浙江省宁波市镇海区镇海蛟川书院2022-2023学年九年级上学期期中数学试题(已下线)第22课 相似三角形的性质及其应用-【帮课堂】2022-2023学年九年级数学上册同步精品讲义(浙教版)陕西省咸阳市礼泉县2021-2022学年九年级上学期期中考试数学试卷(已下线)专题6.6 相似三角形的实际应用(专项训练)-2022-2023学年九年级数学下册《同步考点解读·专题训练》(苏科版)(已下线)专题27.2.4 相似三角形的应用(专项训练)-2022-2023学年九年级数学下册《同步考点解读·专题训练》(人教版)河南省郑州市金水区第十一初级中学2023-2024学年九年级上学期期中数学试题(已下线)专题07 相似三角形(知识串讲+热考题型+真题训练)-2023-2024学年九年级数学上学期期中期末考点归纳满分攻略讲练(人教版)(已下线)九年级开学摸底考(浙江专用)01-2023-2024学年九年级数学下学期开学摸底考试卷
6 .
和
的三边长分别为7、2、6和18、6、21,则
与
的面积比为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
您最近一年使用:0次
7 . 如图,在四边形
中,
平分
,
,
,点E为
的中点.
;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098f2d934743e32a3668dd5e612716e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e9e7e1fc13311759f6ad694665d88.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f7c1fd715395858fef59913b8d9262.png)
您最近一年使用:0次
2024-01-13更新
|
121次组卷
|
4卷引用:吉林省长春市九台区2023-2024学年九年级上学期期末数学试题
吉林省长春市九台区2023-2024学年九年级上学期期末数学试题河南省南阳市邓州市城区第五初级中学校2023-2024学年九年级上学期期末数学试题(已下线)第02讲 探索三角形相似的条件(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(人教版)(已下线)专题提升 相似三角形的判定与性质(30题)-【帮课堂】2023-2024学年九年级数学下册同步学与练(人教版)
8 . 在平面直角坐标系中,抛物线
经过点
,点
、
为该抛物线上两点,点
的横坐标为
,点
的横坐标为
.过点
作
垂直于直线
,交直线于点
.
(1)求抛物线
的函数表达式;
(2)①当
时,求
的值;
②当
时,若
,求
的值;
(3)设直线
交
轴于点
,直线
交
轴于点
,若
与
面积比为
或
,请直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0a69144e8a38f3ed31018d5a21b026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812a9b58ccba331cfd21d244329af01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6748272439478b92c615675b869cd52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0a69144e8a38f3ed31018d5a21b026.png)
(2)①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd172042ed396eb8ff692912613fb2d.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e47690ed332c573186992b6d25654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9c934d84feba963335cc7edf01610e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320896d1b4b9217d9ba527604ac35d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
9 . 如图,正方形
的顶点
在
轴上,点
,点
在反比例函数
图象上.若直线
的函数表达式为
,则反比例函数表达式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a37e8519ea115c1777d031d9963583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24edd2a1d145627d07330524017daf5c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-13更新
|
124次组卷
|
3卷引用:吉林省长春市长春净月高新技术产业开发区净月实验中学2023-2024学年九年级上学期期末数学试题
名校
10 . 如图,在矩形
中,
,
,E为边
的中点,点P从点B出发沿射线
以每秒6个单位的速度运动,Q为线段
的中点,过点P作
的垂线,过点Q作
的平行线,两线交于点M,设点P运动的时间为t秒(
).
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/4e33566c-c8d7-4882-baab-f556fa170f4a.png?resizew=264)
(1)直接写出线段
的长;(用含t的代数式表示)
(2)当点M落在边
上时,求t的值;
(3)当
与矩形
重合部分图形为四边形时,求t的取值范围;
(4)连接
,作点B关于
的对称点
,连接
,当
时,直接写出t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.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/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/4e33566c-c8d7-4882-baab-f556fa170f4a.png?resizew=264)
(1)直接写出线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
(2)当点M落在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99675fa03da205c4499967c9d908412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(4)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd00c7cbe7c110566725ec91dcc2f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14bc9983f123701604ea131508334e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb6f7155a3ff1a6582b50c008f694ed.png)
您最近一年使用:0次