如图,正方形网格中,每个小正方形的边长为
,则网格上的
中,长为无理数的边有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/26ad4c1c-0344-47a9-be26-101a75ec6d6a.png?resizew=141)
A.0条 | B.1条 | C.2条 | D.3条 |
更新时间:2020-05-21 05:59:19
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真题
【推荐1】在 3.14,
,π和
这四个实数中,无理数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5be7821872c2f83d39ffaea5216d09.png)
A.3.14和![]() | B.π和![]() | C.![]() ![]() | D.π和![]() |
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【推荐2】在实数
、
、0、
、
、
、
、
、
中,无理数的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fa97ba44fcdff4770b4419537474e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850ff99eed5784c0473786ff8dbcd224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc6c9f60310a4543f9ea69fd5246b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99907aff079a6cd66e89ce5b79ae0411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4383f39baab74d1ec92b5026a3a98ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa9282db7a1f62241b9f60545d611fc.png)
A.2个 | B.3个 | C.4个 | D.5个 |
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【推荐1】如图,每个小正方形的边长为1,若A、B、C是小正方形的顶点,则
度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/0f127161-b78f-4814-a50d-615d8fe54299.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/0f127161-b78f-4814-a50d-615d8fe54299.png?resizew=150)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】在每个小正方形的边长为
的网格图形中,每个小正方形的顶点称为格点.如图,点
,
,
,
都在格点上,以点
为圆心,
长为半径画弧,已知
过点
,
经过格点
,则扇形
的面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/22/10392fbc-3bf6-403e-83f2-df65c538e029.png?resizew=149)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e124a392dc84fcc1662fe6d896aa12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec346c46d052d7a88b1a78715cd52e0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/22/10392fbc-3bf6-403e-83f2-df65c538e029.png?resizew=149)
A.![]() ![]() | B.![]() ![]() | C.![]() | D.![]() |
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