如图,已知AD,BC相交于点E,且△AEB∽△DEC,CD=2AB,延长DC到点G,使CG=
CD,连接AG.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/79fa8e7e-f3ab-459f-b5de-430e01f078c1.png?resizew=191)
(1)求证:四边形ABCG是平行四边形;
(2)若∠GAD=90°,AE=2,CG=3,求AG的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/79fa8e7e-f3ab-459f-b5de-430e01f078c1.png?resizew=191)
(1)求证:四边形ABCG是平行四边形;
(2)若∠GAD=90°,AE=2,CG=3,求AG的长.
21-22九年级·全国·假期作业 查看更多[14]
(已下线)第16讲 图形的相似全章复习与测试-【暑假自学课】2022年新九年级数学暑假精品课(北师大版)(已下线)专题4.35 相似三角形几何模型-X型图(基础篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(北师大版)(已下线)专题4.2.3 相似三角形的性质(能力提升)-2022-2023学年九年级数学上册《同步考点解读·专题训练》(北师大版)广东省茂名市高州市第一中学附属实验中学2022-2023学年九年级上学期期中考试数学试题 福建省福州市2022-2023学年九年级上学期期末适应性练习数学试题 福建省福州市2022-2023学年九年级上学期数学期末试卷(已下线)专题27.30 相似三角形几何模型-X型图(基础篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(人教版)(已下线)专题6.33 相似三角形几何模型-X型图(基础篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(苏科版)2023年福建省宁德市博雅培文学校中考一模数学试题(已下线)第02讲 相似三角形的判定与性质(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学上册《知识解读·题型专练》(北师大版)(已下线)第02讲 相似三角形的判定与性质(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学上册《知识解读·题型专练》(浙教版)广东省佛山市南海区桂城街道映月中学2023-2024学年九年级上学期期中数学试题(已下线)第03讲 相似三角形的性质(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(人教版)(已下线)第03讲 相似三角形的性质(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(苏科版)
更新时间:2022-06-25 19:22:54
|
相似题推荐
解答题-证明题
|
较易
(0.85)
名校
【推荐1】某运动公园有一块空地,如图,△ABC所示,∠ACB=90°,公园管理处计划在△ADC区域内安装健身器材,其余部分种植草坪,绿化环境.经测量:CD=30米,AD=40米,BC=120米,AB=130米.
![](https://img.xkw.com/dksih/QBM/2021/7/9/2760266962722816/2796176121036800/STEM/90570145-dfd9-4268-8345-a4c276c9a5a4.png)
(1)求证:∠ADC=90°;
(2)若种植草坪的费用每平方米300元,求种植草坪的总费用.
![](https://img.xkw.com/dksih/QBM/2021/7/9/2760266962722816/2796176121036800/STEM/90570145-dfd9-4268-8345-a4c276c9a5a4.png)
(1)求证:∠ADC=90°;
(2)若种植草坪的费用每平方米300元,求种植草坪的总费用.
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐2】如图,Rt△ABC中,∠C=90°,D为AC上一点,且DA=DB=12cm,△DAB的面积为60cm2,求CD的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/817acd65-c6cc-4401-ab3d-0a14ab580929.jpg?resizew=171)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】如图是由小正方形组成的
网格,每个小正方形的顶点叫做格点.四边形
的四个顶点都是格点,仅用无刻度的直尺在给定网格中完成画图(画图过程用虚线,画图结果用实线).
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/6918b57a-9b7c-42a9-b52d-94056ab3ddc5.png?resizew=395)
(1)判断四边形
的形状;
(2)在图1中,先在
上画点
,使
,再在
上画点
,使
;
(3)在图2中的
上画点
,使
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490dbe9310ac070780745e3d504a953e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/6918b57a-9b7c-42a9-b52d-94056ab3ddc5.png?resizew=395)
(1)判断四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在图1中,先在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eedf93beec809182ff56885c77cf18a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c581dab991aeadf06d972e47673ea8.png)
(3)在图2中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963e0391a2b071c0f81cff5920c8598d.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】已知,如图,
、
分别为矩形
的边
和
上的点,
.
求证:
.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://img.xkw.com/dksih/QBM/2021/5/5/2714570245496832/2718609782587392/STEM/885e48b3-c176-4ff1-83e7-6502b583449c.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐1】如图,在平面直角坐标系中,直线
过点
,与
轴相交于点
,与直线
相交于点
,点
的横坐标为
,点
为
轴上一动点,横坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/d479ef44-971f-4884-884e-4ad0faca4bb6.png?resizew=492)
(1)求直线
的表达式;
(2)过
作
轴的平行线,分别交直线
,直线
于点
,连接
,
①当
时,求
的长;
②当
时,请直接写出
的值;
(3)若点
在线段
上,当
为等腰三角形时,请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a528d113fdb2cded90a765015edd2774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d429efe96d68065e7d433c996682791d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/382a706d27903f7d5a01fbe9fc272a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/d479ef44-971f-4884-884e-4ad0faca4bb6.png?resizew=492)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3648c864f9f58da1dbb166fee84cfeaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea147ada4f0aefdd3808a6a1133792eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dddb32a7a5c157fdf8aa049b2d665b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】已知:如图,在△ABC中,点D,E分别在边AB、 AC上,DE∥BC,∠ABE=∠C,
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d8adbc43c944b6999ffbb84c6a6f2b.png)
(2)当BE平分∠ABC时,求证:
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d8adbc43c944b6999ffbb84c6a6f2b.png)
(2)当BE平分∠ABC时,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b148481b54540cda9e2a2d156af7de0b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/20/f31b1d03-c35d-49f7-9838-ac125b696902.png?resizew=184)
您最近一年使用:0次