已知:如图,线段
.求作:
,使
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce7f6d278f2ef7a193b7eed7be6b3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f0dccb17b4c337dc22db5299ba3e61.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/2d3ea159-887b-4532-88d4-41189bc14857.png?resizew=100)
2023·山东青岛·二模 查看更多[3]
2023年山东省青岛市西海岸新区中考二模数学试题2023年山东省青岛市李沧区中考二模数学试题(已下线)13.2 等腰三角形(题型精讲精练)-【题型分类精粹】2023-2024学年八年级数学上学期期中期末复习讲练系列【考点闯关】(人教版)
更新时间:2023-05-15 20:32:05
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解答题-作图题
|
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【推荐1】如图,已知点E、C在线段BF上,且BE=CF,CM∥DF,
(1)作图:在BC上方作射线BN,使∠CBN=∠1,交CM的延长线于点A(用尺规作图法,保留作图痕迹,不写作法);
(2)在(1)的条件下,求证:AC=DF.
(1)作图:在BC上方作射线BN,使∠CBN=∠1,交CM的延长线于点A(用尺规作图法,保留作图痕迹,不写作法);
(2)在(1)的条件下,求证:AC=DF.
![](https://img.xkw.com/dksih/QBM/2017/3/7/1638696071438336/1644558572650496/STEM/5f1a2e6daa40451b88d9aab7e14b770e.png?resizew=203)
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解答题-作图题
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适中
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【推荐2】作图:求作一个三角形,使它的两边分别为a和2a,其夹角为∠α.(要求:用尺规作图,并写出已知,求作,保留作图痕迹,不写作法)
![](https://img.xkw.com/dksih/QBM/2018/2/12/1880557092659200/1881040121544704/STEM/ebe59b18b7c24fd1aa5d284f5ef684c6.png?resizew=247)
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,点
为
外一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/13/17cee9d8-6b2c-4af6-8cd9-7c292e0c8580.png?resizew=157)
(1)过点
作
两条切线
、
(尺规作图,保留痕迹,不写作法)
(2)证明:
平分
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/13/17cee9d8-6b2c-4af6-8cd9-7c292e0c8580.png?resizew=157)
(1)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
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解答题-作图题
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适中
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【推荐2】已知,如图,在Rt△ABC中,∠C=90°,AD平分∠CAB.
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973016655929344/2974122068738048/STEM/8ef6a6cb39c54202b2d34e7699fb932a.png?resizew=202)
(1)按要求尺规作图:作AD的垂直平分线(保留作图痕迹);
(2)若AD的垂直平分线与AB相交于点O,以O为圆心作圆,使得圆O经过AD两点.
①求证:BC是⊙O的切线;②若
,求⊙O的半径.
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973016655929344/2974122068738048/STEM/8ef6a6cb39c54202b2d34e7699fb932a.png?resizew=202)
(1)按要求尺规作图:作AD的垂直平分线(保留作图痕迹);
(2)若AD的垂直平分线与AB相交于点O,以O为圆心作圆,使得圆O经过AD两点.
①求证:BC是⊙O的切线;②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48137f4119e6c3eac8cbf87592630cee.png)
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解答题-作图题
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适中
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【推荐1】如图,点
是
上一点.
![](https://img.xkw.com/dksih/QBM/2022/5/20/2983500552331264/2984882968870912/STEM/5ba652d6-d43e-45cb-ba7a-99b05806111d.jpg?resizew=144)
(1)请用直尺和圆规过点
作出
的一条切线;(不要求写出作法,不要求证明,但要保留作图痕迹)
(2)若(1)所作切线上取一点
,满足
,若半径为2,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2022/5/20/2983500552331264/2984882968870912/STEM/5ba652d6-d43e-45cb-ba7a-99b05806111d.jpg?resizew=144)
(1)请用直尺和圆规过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若(1)所作切线上取一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
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解答题-作图题
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适中
(0.65)
【推荐2】尺规作图:已知线段a,作一个等腰
,使底边长为a,底边上的高为
.(要求:写出已知求作,保留作图痕迹,在所作图中标出必要的字母,不写作法和结论)
已知:
![](https://img.xkw.com/dksih/QBM/2011/12/3/1573294347296768/1573294432362496/STEM/baa0ba8710bd4346a6aeed797c4140c7.png)
求作:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f4f765a5457a67321aa228fbee7d68.png)
已知:
![](https://img.xkw.com/dksih/QBM/2011/12/3/1573294347296768/1573294432362496/STEM/baa0ba8710bd4346a6aeed797c4140c7.png)
求作:
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