已知:在
中,
,
交
于点
.
![](https://img.xkw.com/dksih/QBM/2021/10/20/2833568553795584/2837433181200384/STEM/0340d698-0139-4c93-b73e-34dd87660015.png?resizew=183)
(1)尺规作图:作线段
的垂直平分线交
于点
,交
于点
,连接
;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70734a8e672376bb0bd1522e229f86a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2021/10/20/2833568553795584/2837433181200384/STEM/0340d698-0139-4c93-b73e-34dd87660015.png?resizew=183)
(1)尺规作图:作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb1ea72b925b12d1aa05826ad34c960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf7a961a55aa7f225fadb6a25a60c75.png)
更新时间:2021-10-26 06:35:29
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图在
中,
,
为
的中点,
分别是
,
边上的点,且
.判断
的关系,写出证明过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90dc865781ebfe38b4a75d5184a8956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c818110255bdad691f61be6461a6fd73.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/5/0d04f952-c000-4191-9d01-44f957561266.png?resizew=174)
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解答题-证明题
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适中
(0.65)
名校
【推荐2】在
中,
平分
,
,垂足为点D,过点D作
,交
于点E,
.
是等腰三角形;
(2)求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93380ab8eccc6e6f11bdf19ffc2d4cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca14fa885a9d04f04e0418b49b118241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】探究式学习是新课程提倡的重要学习方式,某兴趣小组拟做以下探究.
(1)如图1,在三角形纸片
中,
,
,将
沿
折叠,使点A与点B重合,折痕和
交于点E,
,求
的长;
【深入探究】
(2)如图2,将长方形纸片
沿着对角线
折叠,使点C落在
处,
交
于E,若
,
,求
的长(注:长方形的对边平行且相等);
【拓展延伸】
(3)如图3,在长方形纸片
中,
,
,点E为射线
上一个动点,把
沿直线
折叠,当点A的对应点F刚好落在线段
的垂直平分线上时,求
的长(注:长方形的对边平行且相等).
(1)如图1,在三角形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cb6ca11c8c7d9e7d5b926dc6399ee58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5a8fddaedd9f15e26db1df377da4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
【深入探究】
(2)如图2,将长方形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
【拓展延伸】
(3)如图3,在长方形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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解答题-应用题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系
中,已知
、
是反比例函数
的图像上的两点,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/dcffd758-9e05-48ea-8206-573c0bedbe44.png?resizew=118)
(1)求反比例函数的解析式;
(2)线段
的垂直平分线交
轴于点
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bdb3dac5792ec5fa1ce3f6e7561534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49753619c62e49d6375aa8a7059cbd09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9940526785ca763da2dfa35e77c934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/dcffd758-9e05-48ea-8206-573c0bedbe44.png?resizew=118)
(1)求反比例函数的解析式;
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】按照下列要求完成作图.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/bd53f5c8-9e0c-4565-8559-7bf1d4c33a87.png?resizew=252)
(1)分别作出作直线AB,射线CB,线段AD;
(2)取AD的中点E;作
交AB于点H.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/bd53f5c8-9e0c-4565-8559-7bf1d4c33a87.png?resizew=252)
(1)分别作出作直线AB,射线CB,线段AD;
(2)取AD的中点E;作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3bb34308698b377df58ef5441aeec76.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】用圆规、直尺作图,不写作法,但要保留作图痕迹.
如图,矩形
区域是正在改造的青岛火车站南广场的一部分.喜欢设计的小明在这一区域内设计了一个圆形休闲广场,要求这个圆
与三条道路
相切,请画出这个圆
.
如图,矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba036781d91a0c85b17179e96f8c01db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在等腰梯形ABCD中,AD∥BC.O是CD边的中点,以O为圆心,OC长为半径作圆,交BC边于点E.过E作EH⊥AB,垂足为H.已知⊙O与AB边相切,切点为F.
(1)求证:OE∥AB;
(2)求证:
;
(3)若
,求
的值.
(1)求证:OE∥AB;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24efdd2c98bedea80896ef2a7325c28c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc10c5a818612dbd84365ece53d88c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecaf1329164dd043d0d7f2c26b4b768a.png)
![](https://img.xkw.com/dksih/QBM/2014/5/20/1573728588201984/1573728594182144/STEM/95d6f29950f3400ebcda76fbb8cf13ac.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】已知在平面直角坐标系xOy中,二次函数y=2x2−(1+2c)x+c(c>
,c是常数)的图像与x轴分别交于点A,点B(点B在点A右侧),与y轴交于点C,连接BC.
![](https://img.xkw.com/dksih/QBM/2022/5/18/2982011431813120/2983409509138432/STEM/ac79ac08-e74b-4ec2-b98c-8755055cc8eb.png?resizew=182)
(1)证明:△BOC是等腰直角三角形;
(2)抛物线顶点为D,BC与抛物线对称轴交于点E,当四边形AEBD为正方形时,求c的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
![](https://img.xkw.com/dksih/QBM/2022/5/18/2982011431813120/2983409509138432/STEM/ac79ac08-e74b-4ec2-b98c-8755055cc8eb.png?resizew=182)
(1)证明:△BOC是等腰直角三角形;
(2)抛物线顶点为D,BC与抛物线对称轴交于点E,当四边形AEBD为正方形时,求c的值.
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