如图,在正方形ABCD中,点E(与点B、C不重合)是BC边上一点,将线段EA绕点E顺时针旋转90°到EF,过点F作BC的垂线交BC的延长线于点G,连接CF.
(1)求证:△ABE≌△EGF;
(2)若AB=2,S△ABE=2S△ECF,求BE.
(1)求证:△ABE≌△EGF;
(2)若AB=2,S△ABE=2S△ECF,求BE.
![](https://img.xkw.com/dksih/QBM/2016/10/13/1574247044759552/1574247051452416/STEM/69ef8fa9-24cb-44ce-8242-3bec8cfc5ad8.png?resizew=230)
2016·广西来宾·中考真题 查看更多[6]
2016年初中毕业升学考试(广西来宾卷)数学(已下线)2年中考1年模拟 第四篇 图形的性质 专题21 特殊的平行四边形(已下线)2年中考1年模拟 第四篇 图形的性质 专题19 全等三角形2018吉林中考数学全真模拟(四)吉林省长春外国语学校2017-2018学年八年级(上)期末数学试卷2022年贵州省毕节市中考模拟试卷数学试题(二)
更新时间:2016-12-06 13:56:44
|
【知识点】 根据正方形的性质证明
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,正方形ABCD中,G是BC边上任意一点(不与B,C重合),DE⊥AG于点E,BF//DE,且交AG于点F.
![](https://img.xkw.com/dksih/QBM/2021/10/26/2837784591187968/2844030813339648/STEM/66d9e515-e55e-44f4-a4af-c7420c785abb.png)
(1)求证:AE=BF;
(2)四边形BFDE可能是平行四边形吗?如果可能,请指出此时点G的位置;如果不可能,请说明理由.
![](https://img.xkw.com/dksih/QBM/2021/10/26/2837784591187968/2844030813339648/STEM/66d9e515-e55e-44f4-a4af-c7420c785abb.png)
(1)求证:AE=BF;
(2)四边形BFDE可能是平行四边形吗?如果可能,请指出此时点G的位置;如果不可能,请说明理由.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】【问题背景】如图1,在四边形
中,
,
,
,
,
分别是
,
上的点,
,求证:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/4fae21a4-117f-4dc3-8ea4-9eac12815e5d.png?resizew=126)
小亮同学认为延长
到点
,使
,连接
,先证明
,再证明
,即可得证,并写出了以下的思维框图:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/49b114eb-36be-4a1b-8b5f-1e578648a915.png?resizew=634)
请问:小亮同学②处用到的判定依据是( ).
A.SSS B.ASA C.SAS D.AAS
【探索延伸】如图2,在四边形
中,
,
,
,
分别是
,
上的点,
,上述结论是否仍然成立?请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/b557a903-29f6-43df-b685-742c6c14fe27.png?resizew=132)
【结论运用】在平面直角坐标系中,正方形
如图3放置,
是坐标原点,点
、点
分别在
轴和
轴上,
,
分别是
,
上的点,
,若点
的坐标为
,
,试求出点
的坐标(可直接运用背景结论).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/622e4d3c6de811ad09c78cbbdb82a492.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26eba7e649fade39fd2d0b6ef4ac5ffd.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5c3a6c24a928f9d7508ca02b334fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e04078a552d8ce1232d8c82dd4fcbbf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/4fae21a4-117f-4dc3-8ea4-9eac12815e5d.png?resizew=126)
小亮同学认为延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc180eda08edfb6d54eb04da7741f099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac09e961b25848c2860065aa8f577e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/382dcc8aa37ed16c588b41888c3906a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/49b114eb-36be-4a1b-8b5f-1e578648a915.png?resizew=634)
请问:小亮同学②处用到的判定依据是( ).
A.SSS B.ASA C.SAS D.AAS
【探索延伸】如图2,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3c75d81b1afd11cf80470cee158fb5.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a6aef04eceb608a7a2cfc3e566f9e8b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/b557a903-29f6-43df-b685-742c6c14fe27.png?resizew=132)
【结论运用】在平面直角坐标系中,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1660e78fa0ebf52a5d9045516422b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1cc12877eb3be078ac11b093f7dfeca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e7c422a19b68b8b4cd484d22897e3a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/04038257-4a0b-44c5-957f-bb0e758aa58f.png?resizew=108)
您最近一年使用:0次