1 . 如图,已知点B,E,C,F在同一直线上,
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f805768a5ffaf8bdfa4bc3b680aafdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd4cf8dc61ecd2d057e1f80570b3004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f48d1cbd6610c5daa16ea33deab9406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2086ddf65b72872686b0823476aad559.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/bb9e6f3e-a8c5-4750-b00c-7be5c548ad4c.png?resizew=265)
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2023-05-09更新
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787次组卷
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5卷引用:2023年福建省宁德市中考一模数学试题
2023年福建省宁德市中考一模数学试题2023年福建省宁德市中考二检数学试卷(已下线)专题07 全等三角形、相似三角形-学易金卷:5年(2019-2023)中考1年模拟数学真题分项汇编(福建专用)(已下线)专题04 三角形全等的条件(六大类型)(题型专练)-2023-2024学年八年级数学上册《知识解读·题型专练》(浙教版)江苏省苏州工业园区金鸡湖学校2022-2023学年七年级下学期第二次月考数学试题
22-23八年级上·全国·课后作业
2 . 如图,已知
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9fa847f893bc238c97ee4e916e5368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/424269ceef173843aae76e39ecdf6111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c244edbf77fbb8e9c017515e370c5c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/8f00ba8e-b868-47d4-af94-d586133aca55.png?resizew=149)
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2023-03-16更新
|
1065次组卷
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4卷引用:【浙教版课时练习】八年级上册1.4 全等三角形
(已下线)【浙教版课时练习】八年级上册1.4 全等三角形山东省济宁市任城区实验初中2022-2023学年八年级上学期期末数学试题广东省佛山市南海实验中学2022-2023学年七年级下学期数学期中试题山东省德州禹城市某校2023-2024学年八年级上学期10月月考数学试题
3 . 如图,已知
中,
,
平分
,请补充完整过程,说明
的理由.
![](https://img.xkw.com/dksih/QBM/2023/1/8/3148611903324160/3156142603821056/STEM/158072206a1141f78cbc8b36f99cac7e.png?resizew=128)
证明:∵
平分
,
∴
__________(角平分线的定义)
在
和
中,
,
∴
(__________)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901d94b32038d99ef9e748f1fe2b8c55.png)
![](https://img.xkw.com/dksih/QBM/2023/1/8/3148611903324160/3156142603821056/STEM/158072206a1141f78cbc8b36f99cac7e.png?resizew=128)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a2b104be37d7663966afb47fab83c7.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6445c632a3309e98eabbaaa5292e755f.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901d94b32038d99ef9e748f1fe2b8c55.png)
您最近一年使用:0次
名校
4 . 如图,
,
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaae99b4ac308549134169e69247a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c244edbf77fbb8e9c017515e370c5c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca10806fc8c3c3efd6859f526b76900.png)
您最近一年使用:0次
2023-01-05更新
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2卷引用:重庆市南岸区第十一中学校2020-2021学年七年级下学期期中数学试题
名校
5 . 如图.在
和
中,
,
,
.
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63df0f5cad1a1d8c5e6ae5f3bc8f837b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cb6392b1f859954303066037c5f5fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2b3d993a79210952ef190542700111.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b33c76b7b7ac201735eecdbf9a1eb7e.png)
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2022-11-25更新
|
613次组卷
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8卷引用:北京市十九中2022-2023学年八年级上学期期中数学试卷
北京市十九中2022-2023学年八年级上学期期中数学试卷北京市海淀区第十九中学2022~2023学年八年级上学期期中数学试卷广东省肇庆市肇庆中学2022-2023学年八年级上学期期末考试数学试题山东省济南市钢城区2022-2023学年七年级上学期期末数学试题(已下线)2023年四川省宜宾市中考数学真题变式题19-22题福建省泉州市第九中学2023-2024学年八年级上学期期中模拟数学试题贵州省贵阳市开阳县2022-2023学年八年级上学期期末数学试题(已下线)专题02 探索三角形全等的条件(七大题型)(题型专练)-2023-2024学年七年级数学下册《知识解读·题型专练》(北师大版)
名校
6 . 如图,点
是
的中点,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c33e90eb053f8a718d5f9a1d3ef834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391c4d96cfb4e7c0f1df58a94be7218.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/8636caab-b861-4ad7-8082-440495a32d9b.png?resizew=138)
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2022-11-21更新
|
372次组卷
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7卷引用:2020年云南省中考数学3月模拟试题
2020年云南省中考数学3月模拟试题2020年广东省广州市南阳学校九年级中考复习试题(已下线)期末检测(3)-2020-2021学年七年级数学上册十分钟同步课堂专练(沪科版)江苏省沭阳县怀文中学2019-2020学年九年级第8次形成性测试数学试题湖南省衡东县杨山实验中学2022-2023学年八年级上学期期中考试数学试题福建省龙岩市莲东中学2020-2021学年八年级上学期第一次月考数学试题(已下线)2023年四川省宜宾市中考数学真题变式题19-22题
7 . 如图,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8f430fcffec55eda375a38605cd1b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0af8fee94d55226c6afa80a152e2ae6a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/8c893438-217a-4ce9-9de9-50c35ac0cf0d.png?resizew=158)
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2022-11-14更新
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257次组卷
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2卷引用:广东省惠州市惠南学校2022—2023学年八年级上学期数学月考试题
名校
8 . 如图,已知
,E、F是AC上两点,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c9d02e4dd9238ad97b1ee4c4436913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8f7a3cf5a6acc41c4932eb8548e9e7.png)
![](https://img.xkw.com/dksih/QBM/2022/11/7/3104542201225216/3104709025087488/STEM/0c373de3c1644745b62aeb7863415627.png?resizew=193)
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9 . 已知:如图,
,
,
.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba46f9fceccff74b15e6dad269412cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da8fe8f5f8a3f17561d70652ad1172a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca10806fc8c3c3efd6859f526b76900.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/5d97876a-7e54-4fba-ab77-b960e5e5c639.png?resizew=172)
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2022-11-02更新
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331次组卷
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2卷引用:湖南省长沙市明德教育集团2022-2023学年八年级上学期期中考试数学试卷
22-23八年级上·全国·阶段练习
10 . 如图,A,B分别是线段
上的点,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9ba6d3a4b110f65a8d203aeadd03ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cbad6599796efc1c177ae9349feda9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fca3734de79f7f50b552ef62b29dc7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd636d15ee534982e0b2a22c14f81cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/6bb14b5a-2c71-4d45-be76-700fecfbef2b.png?resizew=112)
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