如图,在
中,
,
,请利用尺规作图法在
边上求作一点E,连接
、
,使得
.(保留作图痕迹,不写作法)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd7a073a78aaca78288d7c6e2a4feae.png)
![](https://img.xkw.com/dksih/QBM/2021/7/15/2764986255384576/2816985396166656/STEM/1cbd305298af4278b3603576b643c620.png?resizew=190)
更新时间:2021-09-27 09:14:22
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相似题推荐
解答题-证明题
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【推荐1】如图,在正方形ABCD中,点O是对角线AC的中点,点P为线段AO上一个动点(不包括两个端点),Q为CD边上一点,若∠PBC=∠PQD.
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980847374237696/3045995434606592/STEM/73571806e8584b1b885318a7d5a48b36.png?resizew=179)
(1)求证:PB=PQ;
(2)试判断运动过程中PB与PQ的位置关系,并给出证明.
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980847374237696/3045995434606592/STEM/73571806e8584b1b885318a7d5a48b36.png?resizew=179)
(1)求证:PB=PQ;
(2)试判断运动过程中PB与PQ的位置关系,并给出证明.
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解答题-问答题
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适中
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【推荐2】如图,在
中,
,
平分
交AC于点D,过点D作
交
于点E,
交
于点F,连接
.
(1)判断:四边形
是什么特殊的四边形,并说明理由;
(2)若
求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cad97dd9d9593fa01342550aba6ec47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/25/3d2d937c-289b-4ecc-b922-95f09b5e6a71.png?resizew=140)
(1)判断:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cfd614f695eea9460c160fe0eec837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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【推荐3】阅读材料,解答问题
数学课上,同学们兴致勃勃地探讨着利用不同画图工具画角的平分线的方法.
小惠说:如图1,我用相同的两块含
角的直角三角板可以画角的平分线.画法如下:
(1)在
的两边上分别取点
,
,使
;
(2)把直角三角板按如图所示的位置放置,两斜边交于点
.
射线
是
的平分线.
小旭说:我只用刻度尺就可以画角平分线.
请你也参与探讨,解决以下问题:
(1)小惠的作法正确吗?若正确,请给出证明,若不正确,请说明理由.
(2)请你和小旭一样,只用刻度尺画出图2中
的平分线,并简述画图的过程.
数学课上,同学们兴致勃勃地探讨着利用不同画图工具画角的平分线的方法.
小惠说:如图1,我用相同的两块含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2032fccdf9ab12429aae024d67b19d60.png)
(2)把直角三角板按如图所示的位置放置,两斜边交于点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
小旭说:我只用刻度尺就可以画角平分线.
请你也参与探讨,解决以下问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/19/56c707f6-5cbe-4020-ae1a-6904ad715338.png?resizew=299)
(1)小惠的作法正确吗?若正确,请给出证明,若不正确,请说明理由.
(2)请你和小旭一样,只用刻度尺画出图2中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9bb2e07b97e294c33fcfad3d114c47.png)
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解答题-作图题
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【推荐1】已知:如图,
,点
在射线
上.
![](https://img.xkw.com/dksih/QBM/2020/2/17/2401042653716480/2401708144246784/STEM/c62187ba6ec64bf1bc65569a0c49cebf.png?resizew=178)
求作:正方形
,使线段
为正方形
的一条边,且点
在
内部.(请用直尺、圆规作图,不写作法,但要保留作图痕迹)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2020/2/17/2401042653716480/2401708144246784/STEM/c62187ba6ec64bf1bc65569a0c49cebf.png?resizew=178)
求作:正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc50ecfa45216f8d098662452cf8d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc50ecfa45216f8d098662452cf8d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
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解答题-作图题
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【推荐2】如图,△ABC中,AB=AC=8,BC=6.
(1)尺规作图:作△BAC的平分线AD.(保留作图痕迹,不写作法);
(2)求AD的长(结果保留根号).
![](https://img.xkw.com/dksih/QBM/2018/4/4/1916759522304000/1919398861512704/STEM/5bba5bc5639241b594cf3843548ec83f.png?resizew=129)
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解答题-作图题
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【推荐1】如图,正方形网格中的每个小正方形边长都是1,每个小格的顶点叫做格点.以格点为顶点分别按下列要求画图:
(1)在图1中,画出一个平行四边形,使其面积为6;
(2)在图2中,画出一个菱形,使其面积为4;
(1)在图1中,画出一个平行四边形,使其面积为6;
(2)在图2中,画出一个菱形,使其面积为4;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/243c198e-9226-4bb0-a480-6207234a57c4.png?resizew=243)
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解答题-证明题
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真题
名校
【推荐2】如图,在
中,
是对角线
、
的交点,
,
,垂足分别为点
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/01637c42-d60f-4ca4-b3b1-e7e343cf3d3d.png?resizew=181)
(1)求证:
.
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/01637c42-d60f-4ca4-b3b1-e7e343cf3d3d.png?resizew=181)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf2e3236ea30ee2c37928b98041f13a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d2231c7a2875ab6d423dff3ead4069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af50cf2832f5f794166ea50dc1cd4964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef1ad4e8c18117625abbdfe66b894a4.png)
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