22-23八年级上·全国·课后作业
1 . 已知:如图,点D,E分别在
上,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca887a24d9ec699f31338b34c8ffe06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30e50e094cd2849e38859b36aad0b0c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/d81eb490-b1ea-40ea-9e39-dd0f2d26cf0d.png?resizew=127)
您最近一年使用:0次
2 . 如图,已知在
中
,
,
,
,现将
绕点
顺时针旋转
到
,连接
,则
的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/5fc34cab-63a4-4dc8-8ab3-6ca5ef901d41.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/5fc34cab-63a4-4dc8-8ab3-6ca5ef901d41.png?resizew=134)
A.4 | B.16 | C.8 | D.6 |
您最近一年使用:0次
3 . 如图,点
、
、
、
在同一条直线上,
,
,
,求证:
.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e6f5241f614c7d310cbf3e25a6d615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53df2a88f461611f7159d0f2f8ef60e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967578d2c4086aef3fda57ed4cdae5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79de59390a7059cfdea1f42ce1ffac70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/b50edc2c-a782-4cbf-b48e-db95a1f743de.png?resizew=310)
您最近一年使用:0次
2022-11-10更新
|
259次组卷
|
2卷引用:山东省枣庄市滕州市龙泉街道滕东中学2021-2022学年七年级下学期11月月考数学试题
4 . 如图,
,
,求证
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/27853e4c-6a10-4098-9013-2d1f5e8ed8d0.png?resizew=143)
∵
,
∴
______
______,
∴
.
在
和
中,
,
∴
( ).
∴______=______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682dc163baa74e18746d3d52da6cff7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/27853e4c-6a10-4098-9013-2d1f5e8ed8d0.png?resizew=143)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682dc163baa74e18746d3d52da6cff7e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be983effc22555200f54e2bb6a959c3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3402c43bf417fdc0ca46f1be843c8be8.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38397641e807f6b2286ecf8e5bebc095.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28fe29a36d3f208bd5ab09c46752dc8.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc8b7af754bf67804acab971cdc483b.png)
∴______=______.
您最近一年使用:0次
5 . 如图,点A,B,D,E在同一条直线上,
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed0562b9d19849572899b1d01d37d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaae99b4ac308549134169e69247a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbff70350b027ad98dd2038111e4c92e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db83188551e0395d6ebf93f8e66eb2ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/9865612c-3d96-4424-8a4f-60baea9e6bea.png?resizew=213)
您最近一年使用:0次
6 . 如图,E、F在线段AC上,∠A=∠C,AE=CF,若∠B=∠D.
求证:DF=BE.
求证:DF=BE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/03b03840-3c81-47ad-964b-0ab12192150d.png?resizew=177)
您最近一年使用:0次
2022-09-21更新
|
654次组卷
|
6卷引用:新疆维吾尔自治区昌吉回族自治州阜康市第四中学2022-2023学年八年级上学期10月月考数学试题
名校
7 . 如图,E是
的边
的中点,过点C作
,过点E作直线
交
于D,交
于F,若
,则
的长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00a5239269d72d6f9632e7d77347106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4698b1edd0db7aa893987168cda463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/c0a3726c-33a9-4b10-b6b5-fd0636c6158b.png?resizew=145)
您最近一年使用:0次
8 . 如图,已知OP平分∠AOB,PC⊥OB于点C,PD⊥OA于点D,延长CP,与OA交于点E,则下列结论不一定 正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/b0f0c855-2230-4ac2-bdae-c7768e8a47a7.png?resizew=179)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/b0f0c855-2230-4ac2-bdae-c7768e8a47a7.png?resizew=179)
A.PC=PD | B.PC=DE | C.∠CPO=∠DPO | D.OC=OD |
您最近一年使用:0次
2022-08-05更新
|
407次组卷
|
3卷引用:河北省廊坊市大城县2021-2022学年八年级上学期期末数学试题
9 . 如图,已知:AC=BD,∠A=∠B,∠E=∠F,求证:AE=BF.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/e50697bf-005b-4248-96cc-fb335788ed47.png?resizew=160)
您最近一年使用:0次
2022-08-03更新
|
366次组卷
|
6卷引用:第一次月考押题培优02卷(考试范围:1.1-2.5)-【微专题】2022-2023学年八年级数学上册常考点微专题提分精练(浙教版)
(已下线)第一次月考押题培优02卷(考试范围:1.1-2.5)-【微专题】2022-2023学年八年级数学上册常考点微专题提分精练(浙教版)(已下线)第1章 全等三角形(基础、典型、易错、压轴)分类专项训练-2022-2023学年八年级数学上学期考试满分全攻略(苏科版)2021年四川省乐山市五通桥区中考数学适应性试卷江苏省淮安市涟水县郑梁梅中学2022-2023学年八年级上学期10月月考数学试题2023年吉林省松原市乾安县严字乡中学、仙字乡中学、余字乡中学等校中考一模数学试题江苏省扬州市江都区江都区第三中学2023-2024学年八年级上学期10月月考数学试题
10 . 如图,△ABC的一个顶点A在△DEC的边DE上,AB交CD于点F,且AC=EC,∠1=∠2=∠3.试说明AB与DE的大小关系.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/46d314f3-a655-42eb-8583-901386548411.png?resizew=168)
您最近一年使用:0次