1 . 如图,将一直角三角形纸片的直角边
折叠,折痕为
与
上
重合,裁去
,已知
,在
上任取一点
,将
沿
翻折,得到
,与
重叠部分记为
.当
为直角三角形时,
长可以为多少?①
;②
;③
;④
.以上答案正确的有( )
![](https://img.xkw.com/dksih/QBM/2022/8/30/3055621145567232/3056956820553728/STEM/78db582e4b02415fbd89c11f2c116616.png?resizew=218)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86f215963fd28e2c30dec3df0740235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dcf17ba9ae27a457188f192cff5a2f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dddd3f1d5e8f341f598d99ce04683fd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fd09f591e95fd40e8ecfe6020f9f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fd09f591e95fd40e8ecfe6020f9f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://img.xkw.com/dksih/QBM/2022/8/30/3055621145567232/3056956820553728/STEM/78db582e4b02415fbd89c11f2c116616.png?resizew=218)
A.①③ | B.①② | C.①②④ | D.①②③ |
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2 . 如图,大矩形分割成五个小矩形,④号、⑤号均为正方形,其中⑤号正方形边长为1.若②号矩形的长与宽的差为2,则知道哪个小矩形的周长,就一定能算出这个大矩形的面积( )
![](https://img.xkw.com/dksih/QBM/2022/8/30/3055621145567232/3056956820250624/STEM/07d0cd4604eb4ee5abbd7cba2237c9d1.png?resizew=269)
![](https://img.xkw.com/dksih/QBM/2022/8/30/3055621145567232/3056956820250624/STEM/07d0cd4604eb4ee5abbd7cba2237c9d1.png?resizew=269)
A.①或③ | B.② | C.④ | D.以上选项都可以 |
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3 . 如图,正方形ABCD中,对角线AC、BD相交于点O,点E是BC的中点,AE交BD于点F,
于点G,连接OG,则下列结论中①
,②
,③
,④
,正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5486478d317b66a6830138d6e87f752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae843cad075fc73e09fd77aa5a1d9827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61db0882323fec7c2afc70231c9de208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad589f9568976df7dd0f3bd1a8df5f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45fa44d10b97c6b7e42a68faa0018c4d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/ed8b6d5b-f548-4dc1-a46b-89f06823a13a.png?resizew=244)
A.1 | B.2 | C.3 | D.4 |
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4 . 如图,
,以点O为圆心,适当长为半径画弧,交OM于点A,交ON于点B;分别以点A,B为圆心,大于
的长为半径画弧,两弧在∠MON的内部相交于点P,画射线OP;连接AB,AP,BP,过点P作PE⊥OM于点E,PF⊥ON于点F.则以下结论错误的是( )
![](https://img.xkw.com/dksih/QBM/2022/8/25/3052111679283200/3057309413253120/STEM/8027dfe60fdc48edbc480763ca40289d.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b5d523373b8cbfa33e42a1bf154544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d49404351575703cfe8325d1352ec9.png)
![](https://img.xkw.com/dksih/QBM/2022/8/25/3052111679283200/3057309413253120/STEM/8027dfe60fdc48edbc480763ca40289d.png?resizew=153)
A.![]() | B.![]() |
C.![]() | D.四边形![]() |
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5 . 在对一组样本数据进行分析时,小凡列出了方差的计算公式:
,根据公式不能得到的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3467513aca8c3c227bf23279176e68.png)
A.众数是6 | B.平均数是8 | C.方差是6 | D.中位数是8 |
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2022-09-01更新
|
90次组卷
|
3卷引用:安徽省六校教育研究会2022-2023学年高一上学期入学考试数学试题
6 . 如图,已知点
,点B是
轴正半轴上的一动点,以
为边作等腰直角三角形
,使点
在第一象限,
,设点
的横坐标为
,点
的纵坐标为
,则
与
的函数关系式是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/9958bf10-d45b-4c43-aad6-7ecfa3352b59.png?resizew=192)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.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/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.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/c5db41a1f31d6baee7c69990811edb9f.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)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/9958bf10-d45b-4c43-aad6-7ecfa3352b59.png?resizew=192)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 已知
是二次函数
的图像上两点,则当
时,二次函数的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/006ae688abc9a61b03ab0b623c7c7c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290c9bf3a35a4b82302307ff8bb2c3ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35968ec93063d62a80e772d39ffec1bd.png)
A.![]() | B.![]() |
C.![]() | D.无法确定 |
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2022-08-31更新
|
151次组卷
|
2卷引用:四川省成都市第八中学校2022-2023学年高一上学期入学考试数学试题
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8 . 有关于二次函数
的三个结论如下:
①对任意的实数
,都有
与
对应的函数值相等;
②若
,对应的
的整数值有4个,则
或
;
③若抛物线与
轴交于不同的两点
,
,且
,则
或
.
其中正确结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee350234b149f3763ac8e9f7f64825c3.png)
①对任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9620730c2cf6ffc9c65d76d8e1bda68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dc648c743c9f7f2b2c49e8987507211.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20d1be3f52520e09f4a76b53b3d4481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5256d45a4c07189fe4c8ca378cfa4a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532ffbbc4bc33543a66aff306d516e0.png)
③若抛物线与
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727b86a5e32149d29b9404644a348903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35253eb1d8e694f7ed64af83c51c2bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
其中正确结论的序号是( )
A.①② | B.①③ | C.②③ | D.①②③ |
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9 . 如图,
为
内一点,
交
于
,
切
于
,若
,
,则
的半径为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/7a835518-80aa-4774-ae92-2505db65d061.png?resizew=174)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8a901e90c7e81450e0c00854011abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/7a835518-80aa-4774-ae92-2505db65d061.png?resizew=174)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 如图所示,已知三角形
为直角三角形,
为圆
切线,
为切点,
,则
和
面积之比为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/16629409-f506-4b98-bb4b-b19ddecfe956.png?resizew=200)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c704dd537af5190eb2fe00285e60121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d365cc7ce9022654091eee60bc1c2b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/16629409-f506-4b98-bb4b-b19ddecfe956.png?resizew=200)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-08-30更新
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192次组卷
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4卷引用:福建省泉州第五中学2022-2023学年高一上学期入学分班摸底检测数学试题