如图所示,在正方形
中,
是
的中点,
是
上的一点,
,下列结论:①
;②
;③
;④
.其中正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/27bdb7f0-8046-4195-b71c-85d38350e9b5.png?resizew=137)
![](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/bce726bceb02452bb4e5ed6b00fa94e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f57b8380e1c9d059087e2bd121153f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d31f6ffbd9b9300781a4d5bf78696b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ebc7ede482215fdb9375ea19d5879ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e479b87033fae747b03d12e5eb9e56f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/27bdb7f0-8046-4195-b71c-85d38350e9b5.png?resizew=137)
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2024-03-15 23:10:00
|
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】如图,
是正方形
的对角线
上一点,
于点
,
于点
,连接
,
.给出下列结论:①
;②
(
表示周长);③
一定是等腰三角形;④
;⑤
;⑥
.其中结论正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/52481fbc-07e7-493a-88f9-a6247bddacee.png?resizew=117)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/ac2ef99db257cc1acb08e3a5e0006d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544204617f1eb4e26a082a72d27d0bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7187f42d8d3b94de9ad65615ad1c2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97859c167a659b63b876fbffe5d9eeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62f1aadf4291d961038e8db73a1b4098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d18e0b20763e76ee99054cf47b2460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461b5b33f1bee2cee89b70a53bed6f04.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/52481fbc-07e7-493a-88f9-a6247bddacee.png?resizew=117)
A.3 | B.4 | C.5 | D.6 |
您最近一年使用:0次
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【推荐2】如图,
,
为
上一点(端点除外),分别以
、
为边长,在
同侧作正方形
和正方形
,连接
、
,连接
交
于点
.设
,
的面积为
,则
关于
的函数表达式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d30cd3e53a9df24fe6da5e8a3a7ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27806ef2d85cfa2d3033cbf19e0d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c421ab2dc57f44899efb36549781347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314fa2cc0e2d7ce4717fe18901b8f208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】如图,将矩形
沿直线
折叠,顶点D恰好落在
边上的F处.已知
,则
( )
![](https://img.xkw.com/dksih/QBM/2021/7/30/2775455172902912/2776216645623808/STEM/36a06c9e5f4345f38ab1a0049e6ce789.png?resizew=182)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9281d1bb3b66a3df6693dbd8ae64abaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f79997547fb75e88ad1e2c66989a4a0.png)
![](https://img.xkw.com/dksih/QBM/2021/7/30/2775455172902912/2776216645623808/STEM/36a06c9e5f4345f38ab1a0049e6ce789.png?resizew=182)
A.13 | B.12 | C.11 | D.10 |
您最近一年使用:0次
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|
适中
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【推荐2】如图,在正方形
中,点
,
分别在边
,
上,
、
分别交
于点
,
,连接
、
,且
.下列结论:①
,
;②
;③
;④
.其中正确结论的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/0e0c1edd-f781-4499-8377-0296c421eea3.png?resizew=130)
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a3643f9c56b30588d7492981bc9651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8acc4ec4ae39819c790108ba72a1e0cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8df5c9bba54641ce3a58d71b47e7bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b24dfa37067ff455888ebe076eeb1fb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe793d674ac6067a0dab33c37d32a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97084de5725d9333b182b3543eef5984.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/0e0c1edd-f781-4499-8377-0296c421eea3.png?resizew=130)
A.4 | B.3 | C.2 | D.1 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,已知矩形纸片
,
,点
在
上,把纸片沿
折叠,点
的对应点
恰好落在
上,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/9d60df2f-4646-4856-8ca3-12d4727c4f08.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42b730d87bb95763a48c69f1b0329ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7106619c08f2bcc1d21f846e8a0de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/9d60df2f-4646-4856-8ca3-12d4727c4f08.png?resizew=162)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知Rt△ABC中,∠C=90°,AC=2,BC=3,那么下列各式中正确的是( )
A.sinA=![]() | B.tanA=![]() | C.tanB=![]() | D.cosB=![]() |
您最近一年使用:0次