在直角坐标系中,圆
是以
为圆心,
为半径的圆,
是直线
上的一条线段,如对于圆
上任意一点
均有
,则线段
长的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edaef66a0582e95fb5c57a405acdea9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1053ca52f2879c7f8bb8a40dceb3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fce8748a0b37757d6f1193db893e5833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
23-24九年级下·浙江·自主招生 查看更多[1]
(已下线)2018年浙江省富阳中学提前招生数学试卷
更新时间:2024-03-01 19:03:11
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【推荐1】如图,在平面直角坐标系中,点
在第一象限,若点
关于
轴的对称点
在直线
上,则
的值为( )
![](https://img.xkw.com/dksih/QBM/2020/11/26/2601400203517952/2605389278265344/STEM/cac351ad-7939-4496-96dc-1d29d9ad813e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651c4b1b8f1f54f0af97107020acf253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec89d17a1b8f7961e2f1f27c2d50685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/2020/11/26/2601400203517952/2605389278265344/STEM/cac351ad-7939-4496-96dc-1d29d9ad813e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如果一次函数的图象与直线
平行且与直线y=x-2在x轴上相交,则此函数解析式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02430f83e4f662e788d234da3c56ce2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,在
中,对角线
、
相交于点O,
,E,F,G分别是
的中点,点N为
与
的交点.下列结论:①
;②
;③
平分
;④
,其中必定正确的结论是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/6517673e-e9bc-414b-8d4c-7fd4145a71d1.png?resizew=140)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d6ceed6e5a36193bcb5a557853dbee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8f3e105cb3dba499eb2dc86d7db1a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea16e7af46146ebe784e4f957b8a2250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ae949669447e566b8f4d5938163a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e142544a6d4e6851096afbd3cbad2fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70c3b5a541bc7ad8aec0b3c4ceb1d85.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/6517673e-e9bc-414b-8d4c-7fd4145a71d1.png?resizew=140)
A.①②④ | B.①③ | C.①②③ | D.③④ |
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【推荐2】如图,在
中,
和
的平分线相交于点
,过点
作
交
于
,交
于
,过点
作
于
,下列四个结论:
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237ca4fce0e9db560978b9408d78a5f0.png)
②点
到
各边的距离相等
③若
,
,
,则
的周长为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
④若
,
,则
.
其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/f5ca85a8-e3c6-4941-ac60-900732ee5d10.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3147ba1d04b4fcaca3c04e425a5b45db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237ca4fce0e9db560978b9408d78a5f0.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e781a2489271bfd1597cba1bb6f5887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df81cda12d7601d58b1d9c7c180c4d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c884a45b56bc34d79273b067c1520b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5b1a20925b91e6a77dd9ebc89d3576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc627ee5e84b139d4eaf3abb59f9a482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a2e2b1da286ae6321b2f41876ccc75.png)
其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/f5ca85a8-e3c6-4941-ac60-900732ee5d10.png?resizew=170)
A.①② | B.①②④ | C.①③④ | D.①②③④ |
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【推荐1】如图所示,四边形ABCD是矩形,过点D作对角线BD的垂线,交BC的延长线于点E,取BE的中点F,连接DF,DF=5,设AB=x,AD=y,则x2+(y﹣5)2的值为( )
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897357115531264/2897386358235136/STEM/47a643c984cd499e92c2b6c5edf1f980.png?resizew=148)
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897357115531264/2897386358235136/STEM/47a643c984cd499e92c2b6c5edf1f980.png?resizew=148)
A.10 | B.25 | C.50 | D.75 |
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【推荐2】如图,等腰
△
中,
,
于
,
的平分线分别交
、
于
、
两点,
为
的中点,延长
交
于点
,连接
,下列结论:
①
;②
;③△
是等腰三角形;④
,其中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9910feb4-1b76-4632-a198-3c494f39ebb0.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7eccdc904f71a7a6a02134f47e08072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af29505e20d3f1a939cf44ca48b0f9c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f63ee2c50a84a8e1875c7760a2d686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193b5b41994c2a4dfa5bb0bc984061cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8c72e85c3fe7cd1ae67239e86fca13.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9910feb4-1b76-4632-a198-3c494f39ebb0.png?resizew=150)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐1】在Rt△ABC中,∠C=90°,sin A=
,b=8,则c=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec5efba5a2b7fb879ffd79fcf73ff03.png)
A.10 | B.25 | C.6 | D.50 |
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【推荐2】在Rt△ABC中,∠C=90°,
,AC=8cm,则BC的长度为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef4442b0290552a9a22af3a37b1c385.png)
A.3cm | B.4cm | C.5cm | D.6cm |
您最近一年使用:0次