名校
1 . 在锐角
中,
,
,
为高,F是
的中点,连接
,
,
.有下列结论:①
;②
是等边三角形;③
;④
与四边形
的面积比是
.其中正确的结论是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/9469cde2-b72e-44da-b594-ff983b5666ac.png?resizew=147)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31c4063c7ebda0e896b22ca23c13ad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707c61cf4adc9c124929df4295f289c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5881f1ce9b4172ca346032d0fd1e3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/9469cde2-b72e-44da-b594-ff983b5666ac.png?resizew=147)
A.①②③ | B.②③④ | C.①②④ | D.①②③④ |
您最近一年使用:0次
2023-05-10更新
|
122次组卷
|
2卷引用:2023年四川省内江市市中区中考二模数学试题
名校
2 . 折纸是我国传统的民间艺术,通过折纸不仅可以得到许多美丽的图形,折纸的过程还蕴含着丰富的数学知识,在综合与实践课上老师让同学们以“正方形的折叠”为主题开展了数学活动.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/15/99be4009-7a72-4f40-86fe-7399ebd27be7.png?resizew=428)
(1)操作判断:
在
上选一点
,沿
折叠,使点
落在正方形内部的点
处,把纸片展平,过
作
交
、
、
于点
、
、
,连接
并延长交
于点
,连接
,如图①,当
为
中点时,
是________三角形.
(2)迁移探究:
如图②,若
,且
,求正方形
的边长.
如图③,若
,直接写出
的值为_______.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/15/99be4009-7a72-4f40-86fe-7399ebd27be7.png?resizew=428)
(1)操作判断:
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee73452ee4d5437f1399f1235b95e55f.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/2cdba1337ec85fa9722cb4b320a82ae6.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.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/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
(2)迁移探究:
如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d2231c7a2875ab6d423dff3ead4069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ad7066451cb7a2e1ed847234f992b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
如图③,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f841bbfa164e3a551ee8c2510b7dc0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a461448fe3b02cd2db9d7ba9a133bc5.png)
您最近一年使用:0次
2023-05-02更新
|
265次组卷
|
8卷引用:2023年陕西省西安市陕西师范大学附属中学中考五模数学试题
3 . 在
中,
,
为
延长线上一点,点
为线段
,
的垂直平分线的交点,连接
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/057dc091-e784-4981-a1f6-8dcc7bae8b42.png?resizew=354)
(1)如图1,当
时,则
______
;
(2)当
时,
①如图2,连接
,判断
的形状,并说明理由;
②如图3,F是
内一点,连接
,
,
.若
是等边三角形,试猜想
与
之间的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/057dc091-e784-4981-a1f6-8dcc7bae8b42.png?resizew=354)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10ad623f3a05ecdc27b3f3e0169669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2ef38925946da1145a68651da67da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
①如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
②如图3,F是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2023-03-19更新
|
420次组卷
|
5卷引用:辽宁省阜新市细河区2022-2023学年八年级上学期期末数学试题
名校
4 . 在学习《2.1圆》时,小明遇到了这样一个问题:如图1(1)、1(2)所示,
和
中,
.试证明
、
、
、
四点在同一圆上.
小明想到了如下证法:在图1(1)、1(2)中取
中点
,连接
、
.则有
及
,即
,所以
、
、
、
四点在以
为圆心,
为半径的圆上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/e8f07e01-0381-4280-bc83-9ec0dac1808d.png?resizew=641)
根据以上探究问题得出的结论,解决下列问题:
(1)如图2,在
中,三条高
、
、
相交于点
,连接0
、
,若
,则
______________°.
(2)如图3,已知
是
的直径,
是
的弦,
为
的中点,
于
,
于
(
、
不重合).若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fec9e3bf7ff287df2cbdff8addfaf5c.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
小明想到了如下证法:在图1(1)、1(2)中取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e76a293eafd83d0b5443b7dbc5c66c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e95eb84bf0f7884765bb158c33cd6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eafd637c08b3d451a90b6e3b000f8288.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/c5db41a1f31d6baee7c69990811edb9f.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/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/e8f07e01-0381-4280-bc83-9ec0dac1808d.png?resizew=641)
根据以上探究问题得出的结论,解决下列问题:
(1)如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb3533e6e2290fb2535211ee99f4902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97d15e903698509950f54f7fa030820.png)
(2)如图3,已知
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa30a9ee227af2b387cf6e028c20d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/b0af1b329e6a00b783376db898246729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71622531dfa894f21b2da123d020d24.png)
您最近一年使用:0次
名校
5 . 直线
的解析式为
,点
在
轴上,直线
上一动点
的横坐标是
,将
绕点
旋转使
落在
轴上的点
处,连接
.
![](https://img.xkw.com/dksih/QBM/2023/1/6/3147039277555712/3148272780763136/STEM/9e977893f0614e82a731f2e53b99447a.png?resizew=171)
(1)当
时,点
的坐标____________
(2)判断
的形状为____________
(3)当
时,
在第二象限内被
与
两条直线所夹部分的面积记为
,用含
的式子来表示
,并直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6ed67cff3efcf4d12bbe1a0fc340b59.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/2023/1/6/3147039277555712/3148272780763136/STEM/9e977893f0614e82a731f2e53b99447a.png?resizew=171)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d0469336f71edd52dc9148c67db052.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d1eec645764636c0e23b05e8f93234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d0469336f71edd52dc9148c67db052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6ed67cff3efcf4d12bbe1a0fc340b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3b4416a186069ad6dbe9d9c1ed76e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
6 . 如图,甲船以每小时
海里的速度向正北方向航行.当甲船位于
处时,乙船位于甲船的南偏西
方向的
处,且乙船从
处沿北偏东
方向匀速直线航行.经过
分钟后,甲船由
处航行到
处,乙船航行到甲船位置(即
处)的南偏西
方向的
处,此时两船相距
海里,求乙船每小时航行多少海里.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578aebcec4f8ab25124f67eaf5b368a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4c9b697e3df2b5469b71d3b5e47a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c12e76fbd84eeec721386bd3b04cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7fdaf9c9ae3eb3d4077ea8aa38dd90.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/25/87f78d86-6379-4fe7-a552-3fa53de2482c.png?resizew=128)
您最近一年使用:0次
7 . 如图,在矩形
中,
为
中点,
过
点且
,分别交
于
,交
于
,点
是
中点,
,则下列结论正确的是( )
①
;②
;③
是等边三角形;④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3934799007d630a891824657df90a859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de4a54cc7818be87a239f6de5f5d05b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09d1c96a41e6fcd9c5afd8af977fd96.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ba5d2df59d14af6d0b73a16664806a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7350c491f8db16e3b1fcf8c1a0498b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1167ae8c71841d25b686a9627e631fc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3934799007d630a891824657df90a859.png)
A.①②④ | B.②③④ | C.①②③ | D.①③④ |
您最近一年使用:0次
2022-12-14更新
|
371次组卷
|
8卷引用:陕西省宝鸡市凤翔县2022-2023学年九年级上学期第一次月考数学试题
陕西省宝鸡市凤翔县2022-2023学年九年级上学期第一次月考数学试题(已下线)22.3.1.2 矩形的判定-2022-2023学年八年级数学下册《考点·题型·技巧》精讲与精练高分突破系列(沪教版)(已下线)第04讲 矩形的判定、判定与性质综合-【暑假自学课】2023年新九年级数学暑假精品课(北师大版)江西省宜春市高安市第二中学、高安市吴有训实验学校2022-2023学年八年级下学期5月月考数学试题江西省上饶市余干县2022-2023学年八年级下学期第三次月考数学试题江西省吉安市永丰县实验学校2022-2023学年九年级上学期数学期中试题2023年四川省绵阳市涪城区中考模拟预测九年级数学模拟预测题2023年四川省绵阳市涪城区中考数学终极模拟预测题(6月份)
8 .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/7c04d8d0-cf2e-4883-8dd4-ae394fececc7.png?resizew=311)
(1)发现,如图1 , 在平面内, 已知
的半径为
为
外一点, 且
为
A上一动点, 连接
, 易得
的最大值为___________,最小值为__________.(用含
的代数式表示)
(2)应用,①如图2, 在矩形
中,
为
中点,
为
边上一动点, 在平面内沿
将
翻折得到
, 连接
, 则
的最小值为___________.
②如图3,
为线段
外一动点,分别以
为直角边,
为直角顶点,作等腰
和等腰
, 连接
. 若
, 求
的最大值.
(3)拓展:如图4, 已知以
为直径的半
为
上一点,
为弧
上任意一点,
交
, 连接
, 若
, 则
的最小值为____________.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/7c04d8d0-cf2e-4883-8dd4-ae394fececc7.png?resizew=311)
(1)发现,如图1 , 在平面内, 已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b6003d92828bcdfdcff4087b696fa2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89a939e01b0ffcd80268559c13c962d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/091e86ca89e484b331fd90125a5e5af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e58e5a299e7b6b508c61244b93ae1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ee9327cfae484f1492cb4cb605a6ca.png)
(2)应用,①如图2, 在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff224f43719421b021f561fefea56e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060b94d19c83489f53e11265635c41d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
②如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a1dd47d59b9755e1815f18f3e22ef81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7c31c23787ef2f87f9fd34ff45ee2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d669994eff129bf0c2f9e27082ba160e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c8b21a087818284c9cd909cc56c814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c0cc023ca94310398e8dc2c3db11cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(3)拓展:如图4, 已知以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4cb58609f025db6982dd397f09e24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50633739e25e29b6d4b8ef9ef1c98c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13364e790991f8b628548ae05f6879f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3405c626121b0ef79adc13463f2f0d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b9be6451da86f014d71882aacc0fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
名校
9 . 如图,在矩形
中,
相交于点O,过点B作
于点M,交
于点F,过点D作
交
于点N.交
于点E,连接
.有下列结论:①四边形
为平行四边形;②
;③
为等边三角形;④当
时,四边形
是菱形.其中,正确结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2d3ea3bdfca7111b823bb1c381a0f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2a245381e615882ee5feb7793a1df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad93bdc4f5a8ac154d8084080ccf1d82.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/69c05fe57071f34658d01060f48f8157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d2fb27662c98d0dbc1ad5c1789b6286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3d8e808e9513f57d7ba851b6b9a93f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd208b2f0f230ffd92c1b56e0e73921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47dfbfbfadf86c6ca8363a93b5157c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3c15b30bd155641e548a7d8c172dd4.png)
A.①②④ | B.①②③ | C.①③ | D.②③④ |
您最近一年使用:0次
2022-11-08更新
|
364次组卷
|
5卷引用:四川省达州市开江县永兴中学2022-2023学年九年级上学期11月月考数学试题
四川省达州市开江县永兴中学2022-2023学年九年级上学期11月月考数学试题江西省抚州市金溪县第一中学2022-2023学年九年级上学期第三次月考数学试题(已下线)第04讲 相似三角形-【帮课堂】2022-2023学年九年级数学下册同步精品讲义(人教版) 2023年山东省德州市夏津县中考一模数学试题(已下线)专题06 四边形中的证明与计算问题-2024年中考数学二轮热点题型归纳与变式演练(江苏专用)
10 . 如图,将图1的正方形纸片沿对角线剪开,得到图2的两张三角形纸片,再将这两张三角形纸片摆成图3所示的图形,使得点B(E)重合.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/9c5e445e-2eb9-4633-8e75-516dbbee2c3f.png?resizew=453)
(1)求证:△ABD≌△CBF;
(2)猜测AD与CF的位置关系,并说明理由;
(3)若∠ABF=120°请判断△BGH的形状,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/9c5e445e-2eb9-4633-8e75-516dbbee2c3f.png?resizew=453)
(1)求证:△ABD≌△CBF;
(2)猜测AD与CF的位置关系,并说明理由;
(3)若∠ABF=120°请判断△BGH的形状,并说明理由.
您最近一年使用:0次