名校
1 . 阅读与思考:
小明同学在学习矩形性质之后,对直角三角形的性质“直角三角形斜边上的中线等于斜边的一半”的证明思路做了及时的梳理与总结.阅读小明同学的笔记,并完成相应任务
任务:
(1)①依据为:______________
(2)请补小明的全证明过程;
(3)上述证明方法中主要体现的数学思想是______;
A.转化思想 B.类比思想 C.数形结合思想 D.从一般到特殊思想
(4)将
和
按图3放置,其中
,
,点A、B、D在一直线上,分别取
和
的中点F和G,连接GF.若
,
,
,则
______.
小明同学在学习矩形性质之后,对直角三角形的性质“直角三角形斜边上的中线等于斜边的一半”的证明思路做了及时的梳理与总结.阅读小明同学的笔记,并完成相应任务
直角三角形斜边上的中线等于斜边的一半 如图1, ![]() ![]() ![]() ![]() ![]() ![]() 分析:要证明 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() 证明:延长 ![]() ![]() ![]() ![]() ![]() ∵ ![]() ![]() ∴ ![]() 又∵ ![]() ∴四边形 ![]() |
(1)①依据为:______________
(2)请补小明的全证明过程;
(3)上述证明方法中主要体现的数学思想是______;
A.转化思想 B.类比思想 C.数形结合思想 D.从一般到特殊思想
(4)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab34c8e368a7a2346a3922f5c532823d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd66f89184ca925f4575c26053decf2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8bb0ccb6920e6a31cc8bcfe1e8c1a0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f1f15400d48e7b756e87e3f566aabe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/18/db1633ce-fcad-4f2b-b647-6f964e732929.png?resizew=185)
您最近一年使用:0次
2 . 综合与实践:
问题情景:如图,在
中,
为对角线
,
的交点,
,
,
,
为
上一动点,连接
并延长交
于点
.
独立思考:(1)当
时,求
的度数;
实践探究:(2)当四边形
为平行四边形时,求
的长;
问题解决:(3)当点
在
的垂直平分线上时,直接写出
的长.
问题情景:如图,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650c6c818df102a83ce5159e3208d01a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feda722a8a8f4b6a84d9ea614e4e8de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
独立思考:(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84733f9dc908ceb11459cc2aed580ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05805b7d1de800f3446ea176a9e00b64.png)
实践探究:(2)当四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bddc68ed03fe7fd1fe30a5e626ba435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
问题解决:(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/20/c576cd26-d1e8-4241-bb51-a65ff3e617a4.jpg?resizew=333)
您最近一年使用:0次
2023-08-12更新
|
91次组卷
|
3卷引用:山西省运城市2022—2023学年八年级下学期期末数学试题
山西省运城市2022—2023学年八年级下学期期末数学试题山西省清徐县县城第二初级中学校2022--2023学年八年级下学期期末数学试题(已下线)专题18.13 矩形(分层练习)(提升练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)
3 . 综合与实践
问题情境:活动课上,同学们以三角形为背景探究图形变化中的数学问题.如图1,
中,
.将
从图1的位置开始绕点C顺时针旋转得到
(点A,B的对应点分别为点
),旋转角为α(
).
操作思考:
(1)如图2,“明辨”小组画出了
恰好经过点B时的图形.求此时旋转角α的度数;
(2)如图3,“善思”小组画出了点
落在
延长线上时的图形,此时点
也恰好在
的延长线上.过点B作
的平行线交
于点P,猜想
和
的数量关系,并说明理由;
拓展探究:
(3)如图4,“博学”小组在图2的基础上,将
沿射线
的方向平移,点B,C,
的对应点分别为D,E,F,若
,当以A,
,D为顶点的三角形是以
为底边的等腰三角形时,请直接写出平移的距离.
问题情境:活动课上,同学们以三角形为背景探究图形变化中的数学问题.如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b185184dc2dc3894a0313fd13f26a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1320d3b30daf11c5a7419983da3b3776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e915c7310f3781887a1afb99dbf949.png)
操作思考:
(1)如图2,“明辨”小组画出了
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
(2)如图3,“善思”小组画出了点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
拓展探究:
(3)如图4,“博学”小组在图2的基础上,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def0507ec4fec5f53b5e55d74ba3a3e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5326817f9af012432a202749d1df59f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/25/3f3aa813-d288-4500-aeec-90403e85eef1.png?resizew=561)
您最近一年使用:0次
4 . 如图,正方形木板
的面积是
,在这个木板上截出面积为
的正方形
,连接
,则
的长度为( )
![](https://img.xkw.com/dksih/QBM/2023/7/10/3277832655757312/3279235451543552/STEM/a16d547d87c74f6eb223a199178ce3f2.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943bbbc757a39dd74d011c75e66e2725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f0992327528165a6747728712ebbb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49dc6682d92de85533e57a5071153b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://img.xkw.com/dksih/QBM/2023/7/10/3277832655757312/3279235451543552/STEM/a16d547d87c74f6eb223a199178ce3f2.png?resizew=146)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 如图,在
中,
,
,点
在边
上,
于点
,交
于点
.若
,则
的长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4cb73e9d976cbfe9c590044fa69dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45306d45915a1eb96b4c62dad6df520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3bb34308698b377df58ef5441aeec76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc5df62e8ac9c74a46462519b95479a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/7dced976-2fc0-41c2-900f-7b5cca2e2441.png?resizew=198)
您最近一年使用:0次
6 . 综合与探究
如图,在平面直角坐标系中,直线
与
轴,
轴分别交于点
,
,直线
与
轴,
轴分别交于点
,
,两条直线交于点
,且点
的横坐标为
;连接
.
的函数解析式;
(2)求
的面积;
(3)若点
在直线
上,
为坐标平面内任意一点,试探究:是否存在以点
,
,
,
为顶点的四边形是矩形?若存在,请直接写出点
的坐标;若不存在,请说明理由.
如图,在平面直角坐标系中,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1e6043df5ef7c948946ef56eca4b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](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/2a01e2e3d40112fdeeb464f81eaac1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77cb0a28d72b7e7eacc877e97bc7ff7.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/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
您最近一年使用:0次
2023-07-12更新
|
136次组卷
|
4卷引用:山西省吕梁市交口县2022-2023学年八年级下学期期末数学试题
山西省吕梁市交口县2022-2023学年八年级下学期期末数学试题山西省吕梁市吕梁市三校、离石区六校2022-2023学年八年级下学期6月期末数学试题(已下线)专题19.18 一次函数与方程、不等式(分层练习)(提升练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版) 山东省济南市市中区2023-2024学年九年级上学期开学数学试题
7 . 综合与实践:
操作发现:
如图1,在
纸片中,
,
于点
.
第一步:将一张与其全等的纸片,沿
剪开;
第二步:在同一平面内,将所得的两个三角形,和
拼在一起.如图2所示,这两个三角形分别记为
和
;
第三步:分别延长
和
相交于点
.
(1)求证:四边形
是正方形;
拓广探索:
(2)如图3,连接
分别交
,
于点
,在四边形
外作
,使得
,
,判断线段
,
,
之间的数量关系,并说明理由.
操作发现:
如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73152c2b4298298c8b81dc16dc21f5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
第一步:将一张与其全等的纸片,沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
第二步:在同一平面内,将所得的两个三角形,和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fb6e81fee5674c3e26a65e58cc506d.png)
第三步:分别延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/15/671c82d9-4652-46f5-8298-0fead9406a68.png?resizew=336)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72794bd3cbe1a898e2254c3dd98a437e.png)
拓广探索:
(2)如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72794bd3cbe1a898e2254c3dd98a437e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/507ed891293f5b9f54304df66ca05949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8bc7197ad41f3819d5e87ce74c7f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fa9cc497f328c9dda7c4e0a624a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360496a4f5cc8a5faca5e089ae4f9531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/15/8d3840e6-990a-4094-9942-6f67f625123e.png?resizew=160)
您最近一年使用:0次
8 . 如图,有一架秋千,当它静止在
的位置时,踏板离地的垂直高度
为
m,将秋千
往前推送水平距离
为3m时到达
的位置,此时,秋千的踏板离地的垂直高度
为
m,秋千的绳索始终保持拉直的状态.求秋千
的长度,
![](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/66577f4cb97c0d2a213ab1a9a02d1324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c8af0b2909df6ec5786c316662919c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/13/80a46cd4-8874-4f1e-a48d-9b26dc89edbf.png?resizew=424)
您最近一年使用:0次
2023-07-09更新
|
98次组卷
|
3卷引用:山西省朔州市右玉县教育集团初中部2022-2023学年八年级下学期7月期末数学试题
名校
9 . 如图,矩形
中,
,
,
是对角线
上的两个动点,分别从
同时出发,相向而行,速度均为
,运动时间为
秒,若
分别是
的中点,且
,当
为顶点的四边形为矩形时,
的值为 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6747441b260ca043446b5d472fece440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432043f79e122f291c47453013042704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d989a128e30a701dfff5592476a76bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f1835adc2bb75785b02807e4fa6a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f067a2a348ceb24a408f82992eab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fa8bd3792adb4f75697357808cd50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0003083d9fb0b9647e818192e04fdf04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f77f553cfa9df7c883ec48d665845801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2023-04-30更新
|
143次组卷
|
9卷引用:山西省忻州市忻府区2023-2024学年八年级下学期中数学试题
山西省忻州市忻府区2023-2024学年八年级下学期中数学试题浙江省杭州市余杭区临平区信达外国语学校2022-2023学年八年级下学期期中数学试题(已下线)第5章 特殊平行四边形 章末重难点检测卷-【帮课堂】2022-2023学年八年级数学下册同步精品讲义(浙教版)(已下线)第17课 矩形-2022-2023学年八年级数学下册《考点·题型·技巧》精讲与精练高分突破系列(浙教版)江苏省南京师范大学附属中学江宁分校2023-2024学年八年级下学期数学阶段练习题(3月20日)甘肃省陇南市三县联考2023-2024学年八年级下学期期中数学试题(已下线)第5章 特殊平行四边形常考易错(9个考点50题专练)-2023-2024学年八年级数学下学期考试满分全攻略高频考点+重难点讲练与测试(浙教版)甘肃省平凉市庄浪县思源实验学校2023-2024学年八年级下学期期中数学试题(已下线)八年级数学下学期末考试模拟试卷01【好题汇编】-备战2023-2024学年八年级数学下学期期末真题分类汇编(浙江专用)
10 . 如图,正方形
中,点
为对角线
上的一点,
,
,垂足分别为
,
,已知
,
,求
的长度.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6cc3789c0e9b7d1226aa0de3327599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082292e52d5b734762cf9c139ee550bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/929adbe2211b012b66fe725d478274c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeedb5f361a1baff6338436fff6c471d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/034c6bc0-9aa6-41c8-804f-6b5c027a08a7.png?resizew=170)
您最近一年使用:0次