如图,正六边形的边长为1,顶点A与原点重合,将对角线
绕点A顺时针旋转,使得点
落在数轴上的点
处,则点
表示的数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.2 |
2024九年级·全国·竞赛 查看更多[5]
第12届“枫叶新希望杯”全国数学大赛九年级(A卷)(已下线)专题17.2 勾股定理(分层练习)(基础练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)(已下线)专题17.12 勾股定理(全章分层练习)(基础练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)2024年广东省惠州市惠阳区新世纪实验学校一模数学试题2024年河北省廊坊市广阳区中考一模数学试题
更新时间:2024-02-10 13:19:15
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【推荐1】实数
,
在数轴上的位置如图所示,则下列判断错误的是( ).
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724466131869696/2736452435992576/STEM/1e51efc7-b4c2-4dcb-87b8-fd8ca0877d7e.png)
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【推荐2】如图,在数轴上以-1表示的点为圆心,以直角三角形的斜边为半径作出一条圆弧(虚线),该圆弧与数轴交于点A,点A所表示的数为m,则m的值为( )
![](https://img.xkw.com/dksih/QBM/2020/12/7/2609006782701568/2614014513168384/STEM/0cb8723c95034112979137652c4bafcf.png?resizew=230)
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【推荐1】如图,在
中,
,
,
,交
于点D,
,则
的长为( )
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【推荐2】如图,在
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【推荐1】如图,在Rt△ABC中,∠ACB=90°,AC=3,BC=4,点D在AB上,AD=AC,AF⊥CD交CD于点E,交CB于点F,则CF的长是( )
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【推荐2】已知,如图,一轮船以16海里/时的速度从港口A出发向东北方向航行,另一轮船以12海里/时的速度同时从港口A出发向东南方向航行,离开港口2小时后,则两船相距( )
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