名校
1 . 已知:
中,
,
,时线
,点D在射线
上,连接
,将线段
绕点D逆时针旋转
得到
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/47709eae-b7f1-4602-96fa-e9a27774f5f7.png?resizew=334)
(1)如图1,连接
并延长交射线
于点F,若
,当
时;
①
°;
②求
的长;
(2)如图2,连接
交
于点G,若
,
,试求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6e4a2df58a236c20df5df0d29a466c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f860fd4f992412e6c8d236bb44c9e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/47709eae-b7f1-4602-96fa-e9a27774f5f7.png?resizew=334)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d653fbebdc18f412b75454425a07de5d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb74fdc5724514d0a8a01a7ff420309.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6cee83d36c4da913e0790e5070c46f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf183bb570296ae27fa34a81a77de7ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次
2023-11-29更新
|
88次组卷
|
3卷引用:福建省泉州市惠安县第四联盟2023-2024学年九年级上学期期中联考数学试题
名校
2 . 已知:正方形
的边长为
厘米,对角线
上的两个动点
,
,点
从点
、点
从点
同时出发,沿对角线以1厘米/秒的相同速度运动,过
作
交
的直角边于
;过
作
交
的直角边于
,连接
,
.(这里规定:线段的面积为0).
到达
,
到达
停止.若
的运动时间为
秒,
(1)当
时,四边形
的面积是______;
(2)当
时,
的面积是______;
(3)当
为何值时,四边形
与
的面积相等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453ea8f3a2b85526b54bf453871c3820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790db8e233280bec605fb7b6c3dfb873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41225b0c6ff901aef01d5094310b82b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce1335e489c2b0835d7e16ea765e1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41225b0c6ff901aef01d5094310b82b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/21/2d85054d-ddc1-48ac-ae2a-fda5819d5759.png?resizew=138)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82db9beb42a2d9249c78bce5be13613.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ff06692c025b869a7bcdcff15dca9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164a4df60a15587971e883cf557b5ce2.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82db9beb42a2d9249c78bce5be13613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164a4df60a15587971e883cf557b5ce2.png)
您最近一年使用:0次
2023-10-15更新
|
112次组卷
|
2卷引用:福建省厦门双十中学2023-2024学年九年级上学期月考数学试题
3 . 如图,矩形ABCD,点P是AD边上的动点,PE⊥AC,PF⊥BD,垂足分别是点E、F,已知AB=4,BC=8,则PE+PF=__________ .
![](https://img.xkw.com/dksih/QBM/2020/5/19/2466195531456512/2466857349742593/STEM/84f84e1a-1399-46f0-a8bb-2f7ed09dffea.png?resizew=182)
您最近一年使用:0次
2020-05-20更新
|
407次组卷
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2卷引用:福建省南平市建阳区2020-2021学年八年级下学期期中数学试题
名校
4 . 如图,在矩形ABCD中,点G在AD上,且GD=AB=1,AG=2,点E是线段BC上的一个动点(点E不与点B,C重合),连接GB,GE,将△GBE关于直线GE对称的三角形记作△GFE,当点E运动到使点F落在矩形任意一边所在的直线上时,则所有满足条件的线段BE的长是__________ .
![](https://img.xkw.com/dksih/QBM/2018/9/23/2038484505264128/2045162925522944/STEM/74ac107b1cf441159cc076b4fd862259.png?resizew=223)
您最近一年使用:0次
2018-08-18更新
|
948次组卷
|
5卷引用:厦门市华侨中学北师大版九年级上册2018-2019学年度数学9月月考卷
厦门市华侨中学北师大版九年级上册2018-2019学年度数学9月月考卷【全国市级联考】河南省郑州市2018年九年级第二次质量预测数学试卷河南省南阳市内乡县2017-2018学年华师大版八年级第二学期期末数学试卷(已下线)【万唯原创】2019年河南省中考数学试题研究河南数学题型四几何图形的折叠与动点问题河北省石家庄市桥西区第四十一中学2019-2020学年八年级下学期期中数学试题