如图1,在等边
中,点
,
分别在
,
边上,
.
沿射线
的方向平移到
的位置,如图2,则
的度数为______;
(2)请在图2中找出一对全等的三角形,并说明理由.
(3)若将图,2中的
绕点
逆时针旋转到图3所示的位置,其余条件不变.
①(2)中的结论还成立吗?(不需说明理由)
②延长
交
于点
,则
的度数为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954d5231cf302b07b7e5e1f37fbad883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2281cb6df0c3c518ce5ed19a02b57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a2db6311e228ed33b6c71d0a5918cf.png)
(2)请在图2中找出一对全等的三角形,并说明理由.
(3)若将图,2中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①(2)中的结论还成立吗?(不需说明理由)
②延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36719f1e764ee0e719b65c49fae84677.png)
更新时间:2023-08-15 17:40:07
|
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,
中,
.
是
内一点,
是
的垂直平分线,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/fbfeb565-bbeb-48b9-955b-453186658020.png?resizew=155)
(1)当
时,求:
的度数;
(2)判断
的形状,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e99cd1610de98c8332da8c4520aad6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/947046ada03c0e6c4ac2360efc458254.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/fbfeb565-bbeb-48b9-955b-453186658020.png?resizew=155)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d21b3f19710ebd4367f00c0bbc87a1fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c3ca226db5d490fa92bb1b7c8deb14.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】(1)如图①,
和
为等腰直角三角形,
,求证:
.
(2)如图②,
,
,试探究线段
与线段
的关系,并加以证明.
(3)如图③,
,
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b40c2b0ab8e1cfe5112d428b4b829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc75953bf5dcfa4af308c34bf9952d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eac6f98ed81727dc5f6699ea5117fff.png)
(2)如图②,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc75953bf5dcfa4af308c34bf9952d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb018be331b3bd70b0ad11e0bd9f12be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(3)如图③,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8501c6b8c3ea9a9b965504ab987626b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fbdef9d23784b3d2c6dda57634e442.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,在正方形网格图中建立一直角坐标系,一条圆弧经过网格点A、B、C,请在网格图中进行下列操作:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/26/589f31be-9b22-4ce5-a689-cd7280c989ba.png?resizew=216)
(1)利用网格确定该圆弧所在圆的圆心D点的位置,并写出点D坐标为______;
(2)连接AD、CD,则⊙D的半径为______(结果保留根号),∠ADC的度数为______;
(3)若扇形DAC是一个圆锥的侧面展开图,则该圆锥底面半径为______.(结果保留根号).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/26/589f31be-9b22-4ce5-a689-cd7280c989ba.png?resizew=216)
(1)利用网格确定该圆弧所在圆的圆心D点的位置,并写出点D坐标为______;
(2)连接AD、CD,则⊙D的半径为______(结果保留根号),∠ADC的度数为______;
(3)若扇形DAC是一个圆锥的侧面展开图,则该圆锥底面半径为______.(结果保留根号).
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解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,点A,
,
在
上,且满足
. 连接
,
;过点A作直线
,交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/3716ae18-ad05-42a3-bee4-1a72f9b31eca.png?resizew=176)
(1)求证:
是
的切线;
(2)如果
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57013e02c6657d0689025e7963175124.png)
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(1)求证:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)如果
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,
,
是斜边
上的中线,过点A作
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于点E.
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;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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(1)求证:
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(2)若
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解答题-作图题
|
适中
(0.65)
【推荐1】已知
是由
经过平移得到的,它们各顶点在平面直角坐标系中的坐标如下表所示:
(1)根据平移规律,请确定:
;
;
;
(2)在如图所示的平面直角坐标系中画出
及平移后的
;
(3)求出
的面积.
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![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
(2)在如图所示的平面直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/15/a9fa864c-337f-44c3-b702-c1ed162cdcbd.png?resizew=266)
(3)求出
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解答题-作图题
|
适中
(0.65)
【推荐2】在平面直角坐标系中,
、
、
三点的坐标分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
.
,
(2)并求
的面积;
(3)在
中,点
经过平移后的对应点为
,将
作同样的平移得到
,画出平移后的
′;
(4)已知点
为
内一点,将点
向右平移4个单位后,再向下平移
个单位得到点
,则
________,
__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a227be7f005bcb4ee4ff2d6b600c0482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f28d35611af6d2c64ad19771297f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fed700b7a3ab2ee7fbae12507033af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)并求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f80171d789e141ea18ab892f1bc42e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
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(4)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e6c80bea87734e4b98b4f6be326286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a22387740736a8487a87f381e22fe75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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