在
中,用直尺和圆规作图的痕迹如图所示.若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d73d54a51a902b5a674633f5affafdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c69a9feb14d4b9ccba6ae42837fd73.png)
A.10 | B.8 | C.6 | D.4 |
2024·四川广安·二模 查看更多[3]
2024年四川省广安市广安区 中考二模考试数学模拟试题(已下线)热点11 尺规作图(9大题型+满分技巧+限时分层检测)-2024年中考数学【热点·重点·难点】专练(广东专用)(已下线)第六章 平行四边形能力提升测试卷-2023-2024学年八年级数学下册《知识解读·题型专练》(北师大版)
更新时间:2024-05-18 10:52:41
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【推荐1】如图,在Rt
中,
,以点A为圆心,适当长为半径画弧,分别交AB、AC于点D,E,再分别以点D、E为圆心,大于
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,
,则
的面积是( )
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
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A.2 | B.3 | C.4 | D.5 |
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【推荐2】如图,在△ABC中,∠C=90°,∠B=30°,以A为圆心,任意长为半径画弧分别交AB、AC于点M和N,再分别以M、N为圆心,大于
的长为半径画弧,两弧交于点P,作射线AP交BC于点D,则下列说法中正确的个数是( )
①AD是∠BAC的平分线;②AD=BD;③AD=2CD;④S△ABD=2 S△ACD.
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878807761092608/2880113438924800/STEM/5c6c6e2154a849e3825fa186611974df.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94e1ca12da27075e5241b7c7ce74672.png)
①AD是∠BAC的平分线;②AD=BD;③AD=2CD;④S△ABD=2 S△ACD.
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878807761092608/2880113438924800/STEM/5c6c6e2154a849e3825fa186611974df.png?resizew=138)
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【推荐1】如图,在正方形ABCD中,O为对角线BD的中点,E为边AB上一点,
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【推荐2】如图,矩形纸片ABCD中,AD=4cm,把纸片沿直线AC折叠,点B落在E处,AE交DC于点O,若AO=5cm,则AB的长为( )
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【推荐1】如图,在平行四边形
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那么下列选项中,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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那么下列选项中,正确的是( )
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【推荐2】如图,
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【推荐1】如图,已知菱形
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【推荐2】如图,在矩形
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