1 . 如图,正方形
的边长为1,P是对角线
上一点,
于点F,
于点E,连接
,给出下列五个结论:①
;②
;③
;④
的最小值为
;⑤
.其中正确的结论是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/adad409f-a5bc-4fea-8f06-65b721a4fc4e.png?resizew=127)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544204617f1eb4e26a082a72d27d0bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb8d58e0ddb759c7c5ea800b371b017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d18e0b20763e76ee99054cf47b2460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62f1aadf4291d961038e8db73a1b4098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17cb150af390b82e5abd89e1cef063a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630b193c259400d24c5816e1f09b812b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/adad409f-a5bc-4fea-8f06-65b721a4fc4e.png?resizew=127)
A.①②④⑤ | B.②③④ | C.①②④ | D.①③④⑤ |
您最近一年使用:0次
2 . 如图,已知正方形
的边长为4,P是对角线
上一点,
于点F,连接
,给出下列结论:①
;②
;③
;④
的最小值为
;⑤
可能是等腰三角形,正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/fddcc632-a95f-440b-b5b5-1b344dc8aadc.png?resizew=123)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544204617f1eb4e26a082a72d27d0bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6350abc2bc9e38dca81a52a856c0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62f1aadf4291d961038e8db73a1b4098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461b5b33f1bee2cee89b70a53bed6f04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/fddcc632-a95f-440b-b5b5-1b344dc8aadc.png?resizew=123)
A.2个 | B.3个 | C.4个 | D.5个 |
您最近一年使用:0次
2023-12-10更新
|
142次组卷
|
2卷引用:山西省运城市河津市2022-2023学年九年级上学期期中数学试题
名校
3 . 如图,在平行四边形
中,
,使
,连接
.
是矩形.
(2)连接
,若
,
,求
的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b455b110a30c1533d0a0657e0e48ac33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e92f48e9bfe12d145f7d2a2f0360d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adfe2a58326612fcabd34fd4402a66ee.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
2023-12-10更新
|
227次组卷
|
17卷引用:山西省运城市万荣县2022-2023学年九年级上学期期中数学试题
山西省运城市万荣县2022-2023学年九年级上学期期中数学试题广东省佛山市顺德区翁佑中学2022-2023学年九年级上学期期中考试数学试卷陕西省西安市高陵区2022-2023学年八年级上学期期中考试数学试题陕西省2022-2023学年九年级上学期期中数学试题(已下线)专题18.2.1 矩形的性质与判定(知识解读)-2022-2023学年八年级数学下册《同步考点解读·专题训练》(人教版)湖北省随州市广水市2022-2023学年九年级下学期3月统一考试数学试卷(已下线)专题5.1 矩形的性质与判定(知识解读)-2022-2023学年八年级数学下册《同步考点解读·专题训练》(浙教版)江西省九江市永修县2022-2023学年九年级上学期期中数学试题陕西省榆林市榆阳区2022-2023学年九年级上学期期中数学试题(已下线)第02讲 矩形的性质与判定(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学上册《知识解读·题型专练》(北师大版)(已下线)2023年浙江省宁波市中考数学真题变式题21-24题广东深圳红岭教育集团深康学校2023-2024学年九年级上学期期中数学试题河北省保定市第十三中学2023-2024学年九年级上学期期中数学试题广东省深圳市福田区红岭教育集团2023-2024学年九年级上学期期中数学试题(已下线)第11讲 矩形的判定(6大考点+过关检测)-【寒假自学课】2024年八年级数学寒假提升学与练(人教版)(已下线)专题9.14 矩形(知识梳理与考点分类讲解)-2023-2024学年八年级数学下册基础知识专项突破讲与练(苏科版)(已下线)专题05 矩形、菱形、正方形性质与判定之八大题型-【好题汇编】备战2023-2024学年八年级数学下学期期中真题分类汇编(人教版)
名校
4 . 隘街某店铺在窗户上方安装一个遮阳棚,如图所示,遮阳棚展开长度
,遮阳棚固定点A距离地面高度
,遮阳棚与墙面的夹角为
.在某一时刻,一位身高
的顾客
在太阳光下的影长
,求此时遮阳棚在地面上的影长
.(
,结果精确到
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a754f490a46f1664c3b1b8bcc73c217a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c75bbff567b34c6b2a7230ee3280d97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a386ee919a591cfe15d84fb1eddc2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ea270678b9db2551766773e5596ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb3f35e3db7c1f3a3dd3eb20151b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/16ad6bbe-c5ff-44fa-96b3-dc2f2938f165.png?resizew=149)
您最近一年使用:0次
5 . 如图,在
中,D是
的中点,过点C作
交BD的延长线于点E,连结
.若
,
,则
的长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531d6f90f144551a35d494b1fe7d2b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8817091d0f4b7d7ac6df560cb63c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/2b7aaee8-b8ee-413a-a382-01f7ae6a9d93.png?resizew=152)
您最近一年使用:0次
6 . 2022年中央电视台兔年春晚国朝舞剧《只此青绿》引人入胜,图1是舞者“青绿腰”动作,引得观众争相模仿,图2是平面示意图.若舞者上半身
为
米,下半身
为
米,下半身与水平面的夹角
,与上半身的夹角
,则此时舞者的垂直高度
约为______ 米.(参考数据:
,
,
,结果精确到0.01米)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d628a3004a009eba42c66bb87cb8454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5db9fa0bc36e2308bd3eecd5e78351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b4be7cfa6d7dc4b12e0b30fb74d48f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6aefa16a85def2538a62c94341b9218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6735f0e52e0ba2378c811e2e7d12ae34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3130ee9078c84414bd4c6edf82e032e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42bc5b38d885947d3fbe37f864eea21.png)
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名校
7 . 已知四边形
中,
,对角线
相交于点O.下列结论一定成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c4dec02850a02a8da56514ffffba952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c75a3fd02e4971cab421c88de92f1.png)
A. ![]() | B. ![]() | C. ![]() | D.![]() |
您最近一年使用:0次
2023-11-25更新
|
127次组卷
|
3卷引用:山西省太原市2023-2024学年九年级上学期期中数学试题
8 . 如图,正方形
的边长为
,点E是边
的中点,点F在正方形
的边上运动,当
时,
与
相交于点H,则线段
的长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c55ee522f41c43253050e92b3c8de31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/a36bdf20-1618-47cf-86ad-3fab7b18c796.png?resizew=97)
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9 . 如图,在
中,
,
,
,
为边
上一动点,
于
,
于
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f325403cbedaac249c9a78d33da81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2af439304fcef24d29b40ef3366b25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d2f892a652efbfff1de7dac42e977e0.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/04fb30a9d07e410ac92c34b8ad0133db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca0940f5c21431c089d4f7a221df43c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/590e589a-9d49-4e7a-8838-abdc16f92439.png?resizew=193)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
10 . 如图,在正方形
中,
,点E是
边上一点,且
,连接
,点F是
边上一点,过点F作
交
于点G,连接
,
,
,则四边形
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620bc4cfb53594c834b9afcbc3de516a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d3a004c4f6c29bd52364eb658c704b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f875de8bec0ffc84b8142f81080058.png)
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