在平面直角坐标系中,点A的坐标为
,点B为y轴正半轴上的一个动点,以B为直角顶点,
为直角边在第一象限作等腰
.
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852456959197184/2856615482507264/STEM/3cc3e084-6662-4fb2-bcc1-a858751b1dc8.png)
(1)如图1,若
,则点C的坐标为_____________.
(2)如图2,若
,点D为
延长线上一点,以D为直角顶点,
为直角边在第一象限作等腰
,连接
,求证:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7dbb4d8de32b258d813996710d6241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852456959197184/2856615482507264/STEM/3cc3e084-6662-4fb2-bcc1-a858751b1dc8.png)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e2857963e3ea3578e9a13638c3a2c0.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03f416cb4d50a5f473df4bbceeb3094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893559f79d779b9a5b12ee929d6cfed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5b4ea605cf0b98e428d071f6be6762.png)
更新时间:2021-11-22 09:01:59
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相似题推荐
解答题-问答题
|
适中
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名校
【推荐1】我们规定在网格内的某点进行一定条件操作到达目标点:
代表所有的水平移动,
代表向右水平移动1个单位长度,
代表向左平移1个单位长度;
代表上下移动,
代表向上移动1个单位长度,
代表向下移动1个单位长度,
表示点
在网格内先一次性水平移动,在此基础上再一次性上下移动.
![](https://img.xkw.com/dksih/QBM/2022/10/27/3096677805268992/3098725952856064/STEM/1ddfda66598e48cdbf14fc239dbf4926.png?resizew=500)
(1)如图1,在网格中标出
移动后所到达的目标点
;
(2)如图2,在网格中的点
到达目标点
,写出点
的移动方法__________________;
(3)如图3,在网格内有格点线段(即端点在格点上的线段)
,现需要由点
出发,到达目标点
,使得
、
、
三点构成的格点三角形(即顶点在格点上的三角形)是等腰直角三角形,在图中标出所有符合条件的点
的位置并写出点
的移动方法.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b85152c1459e7d14bfebca89b9a633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175b4a25fe680118e1ca2ad0429d6606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e7552aa506779b2fe0b08799ad0018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda45a7bfd8770afd8ffa3cba377f8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da7b2ff64b7b16f151d36d07a710495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2022/10/27/3096677805268992/3098725952856064/STEM/1ddfda66598e48cdbf14fc239dbf4926.png?resizew=500)
(1)如图1,在网格中标出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9731d9cc5b20d9662b1fbf665d751576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
(2)如图2,在网格中的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)如图3,在网格内有格点线段(即端点在格点上的线段)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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解答题-作图题
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【推荐2】已知
的顶点分别为点
,
是
经过平移得到的,
中任意一点
平移后的对应点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/04c96df5-c32c-4ece-825e-e8124c5f33ba.png?resizew=234)
(1)请写出
平移的过程;
(2)请写出点
的坐标;
(3)请在图中建立直角坐标系,画出
和
,并求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b7d237eacfb712b4cdb46d89227fb3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f49e7fb4df6dd9f25922894af31cf83.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/04c96df5-c32c-4ece-825e-e8124c5f33ba.png?resizew=234)
(1)请写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)请写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77993759b8615ef0b42cb56ef027ff0.png)
(3)请在图中建立直角坐标系,画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
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解答题-证明题
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【推荐1】在▱ABCD中,E是DC的中点,连接AE并延长,交BC的延长线于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/44659830-ac99-4d51-b20f-5303dda07164.png?resizew=204)
(1)求证:BC=CF;
(2)点G是CF上一点,连接AG交CD于点H,且∠DAF=∠GAF.若CG=3,GF=7,求AH的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/44659830-ac99-4d51-b20f-5303dda07164.png?resizew=204)
(1)求证:BC=CF;
(2)点G是CF上一点,连接AG交CD于点H,且∠DAF=∠GAF.若CG=3,GF=7,求AH的长.
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解答题-问答题
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【推荐2】某数学兴趣小组在数学课外活动中,对多边形内两条互相垂直的线段做了如下探究:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/005d2efd-1e2e-48f0-9cf9-88e411f53221.png?resizew=442)
(1)【观察与猜想】如图1,在正方形
中,点
,
分别是
,
上的两点,连接
,
,
,则
的值为________;
(2)【类比探究】如图2,在矩形
中,
,
,点
是
上的一点,连接
,
,
.求
的值:
(3)【拓展延伸】如图3,在四边形
中,
,点
为
上一点,连接
,过点
作
的垂线交
的延长线于点
,交
的延长线于点
,且
,
,
,求
的长;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/005d2efd-1e2e-48f0-9cf9-88e411f53221.png?resizew=442)
(1)【观察与猜想】如图1,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f87b02b744534ae1ed700d21fcceb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eaa7d20e48bde20c8ab18ffb341285e.png)
(2)【类比探究】如图2,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45b04cc3e5adaeff6f9e01e29032803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8775dcf60ad143bc59a58b000f374c56.png)
(3)【拓展延伸】如图3,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41aba1711910c6f533cc94319104f4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6370d6c626bdabf1fc694501ee6c714f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60572975f9ac06ffc8d98ef94de49eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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【推荐1】如图,在△ABC中,BD⊥AC于点D,CE⊥AB于点E,点M,N分别是BC,DE的中点,若
,BC=8,连接EM,DM,求△EDM的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/5484d0b5-d69f-433a-9c33-435d1574dc36.png?resizew=183)
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【推荐2】如图,在△ABC中,AB=AC,点D是AC上一点,过点D作DG丄BC于点G,延长AC到E,使CE=AD,过点E作EF∥AB交延长线于点F.求证:
(1)AD=EF;
(2)BG=FG.
(1)AD=EF;
(2)BG=FG.
![](https://img.xkw.com/dksih/QBM/2021/11/25/2859003360190464/2859667571105792/STEM/3087dd4b-ee18-4180-a358-0101f79694fc.png?resizew=175)
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