如图,在平面直角坐标系中,点
,分别以点O,A为圆心,以
的长为半径画弧,两弧交于点B,然后按如图所示的尺规作图得到
边上的点M.若以点M为旋转中心,将
绕点M逆时针旋转
,则点A的对应点
的横坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd4da08956db1f206c8ea026f4e52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-06-21 14:32:29
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【推荐1】将有序实数对
进行操作后可得到一个新的有序实数对
,将得到的新的有序实数对按上述规则继续操作下去,每得到一个新的有序实数对称为一次操作
例如,
经过一次操作后得到
,
经过二次操作后得到
,
下列说法:
①若
经过五次操作后得到
,则
;
②在平面直角坐标系中将
所对应的点标记为点
,将
经过二次操作、五次操作所得的有序实数对分别标记为点
,点
,若线段
平行于
轴,则
的面积为
;
③若
,
,则
经过三次操作后的结果为
其中正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5296b39d62215c77a923ed5674b10b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6faa3b730bb1534b5a9309ca91e3dc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60866c4aabfb0611541fbb236fcc89c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e574b59b99ed2064b2ce7f7cb788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60866c4aabfb0611541fbb236fcc89c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c88b7907befa90aaf01557fb468349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/642d33e050046c82f219a21e3e0b98a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b7301b23f3e08a4d2133a1befb684b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e377bcc660dec195976990b79f85e39b.png)
②在平面直角坐标系中将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b712df14852c54120ef95e8d05c3b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b712df14852c54120ef95e8d05c3b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035a5a88e7e2d6ef2b47d992412a1f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb960b00b7d4985d659b62eb74f470a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab82ae18e526aaf268e3bbd85570b2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79729ded2d886a3d95f0af6b87d4c2ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c754209fa050a147f5b540cb89521a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8662bc5b28e575087d4e7e9c6aa59605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9508c406e73917fad1a84b945190188a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18081f510e7c0230a8927fa6cea587f6.png)
其中正确的个数是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】平面直角坐标系中,已知A(10,0),△AOP为等腰三角形且面积为25,满足条件的P点有( )
A.12个 | B.10个 | C.8个 | D.6个 |
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【推荐1】如图,直线
,A、B是
上两点,以点A为圆心,
长为半径作弧,交
于点C,连接
,分别以B,C为圆心,大于
长为半径作弧,两弧相交于点D,作射线
,交
于点E,若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e03566282ef39ad17821036f228174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d452f74791f58e8400cb8d2d6038dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a2435ea2476841a251272c51b4a90b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35803969509655f72b4118503ae1c966.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在
中,以顶点
为圆心,以适当长为半径画弧,分别交
于点
,再分别以点
为圆心,以大于
的长为半径画弧,两弧交于点
,作射线
交边
于点
,若
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94e1ca12da27075e5241b7c7ce74672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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A.2 | B.3 | C.4 | D.5 |
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【推荐1】如图所示的曲边三角形可按下述方法作出:作等边
,分别以点A,B,C为圆心,以
长为半径作
,
,
,三弧所围成的图形就是一个曲边三角形.如果一个曲边三角形的周长为
,则此曲边三角形的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,等边三角形
内接于
.若
,则
的半径
的长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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【推荐1】如图,将
绕点C顺时针旋转80°,得到
,若
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/2020/11/25/2600513944993792/2602065610317824/STEM/6b348567c19a48d3930a47588e230c77.png?resizew=149)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96eeb890fd8585092b39e06510601207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://img.xkw.com/dksih/QBM/2020/11/25/2600513944993792/2602065610317824/STEM/6b348567c19a48d3930a47588e230c77.png?resizew=149)
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【推荐2】在
中,
为
边上的点,且
,过点
作
于点
.若
,则
的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/e734201b-4ae9-4210-a4c9-5dd5a5d98afe.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ec66ee0fcf68a7b3ad7fe9cb89546a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76805974fefbe166b90d260e822ab5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8689d619c2508c9000531fc1b8f1f21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ad8c03b9b3d470da6ddf86c9a58e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/e734201b-4ae9-4210-a4c9-5dd5a5d98afe.png?resizew=151)
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