1 . 如图,在
中,
的垂直平分线交
于点D,交
于点
.若
,
,则
的长是 _____ .
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/d8ee9bd02adf9c94a61f52e89d43c52b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
您最近一年使用:0次
2024-03-11更新
|
82次组卷
|
3卷引用:天津市红桥区2023-2024学年八年级上学期期末数学试题
天津市红桥区2023-2024学年八年级上学期期末数学试题广东省普宁市普师高级中学2023-2024学年八年级下学期期中数学试题(已下线)第09讲 等腰三角形的轴对称性(10大核心考点)-【暑假自学课】2024年新八年级数学暑假提升精品讲义(苏科版)
2 . 如图,
中,
,且点
在
外,
在
的垂直平分线上,连接
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
______ °.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/1983c41ebdacc818687e43642f8fb670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4d4e892eeddc5b8a03d5eee1cda573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/fcfeb376-eccd-41cb-9e21-29ac915e1fa8.png?resizew=222)
您最近一年使用:0次
3 . 如图1,在
中,
,
,点P是
内一个动点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/6119a3fd-ce77-49d2-b5c0-b7487445ba78.png?resizew=487)
(1)试找出与
相等的角,并说明理由.
(2)如图2,连接
并延长交
的外接圆
于点Q,交
于点D,连接![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
①求证
;
②求
的最小值.
(3)在如图2的条件下,若
,求证:
![](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/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942a9a6bde4a5b9803b68b1e9065de62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/6119a3fd-ce77-49d2-b5c0-b7487445ba78.png?resizew=487)
(1)试找出与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172766b458ea1e95ab1f5cd70bab7463.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
①求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d23d8614be566e6dd3a0c68ea15450.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac9bf5ac3d89d6847a585bf318b3ba8.png)
(3)在如图2的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6f95e7b64ef2c99935ca58e44df645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074b9214844a7c8a0bca3d97e8c7a244.png)
您最近一年使用:0次
名校
4 . 如图,在
中,
的垂直平分线
交
于点E,交
于点F,D为线段
的中点,且
.
;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fcd80f87d6c54a1f74371e6bae185c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f353a6e8095b29e734f0ccfb4f62ffc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
您最近一年使用:0次
2024-03-07更新
|
82次组卷
|
15卷引用:湖南省长沙市宁乡市2022—2023学年八年级上学期期末调研数学考试试卷
湖南省长沙市宁乡市2022—2023学年八年级上学期期末调研数学考试试卷山西省实验中学2022-2023学年八年级下学期数学第一章三角形的证明单元质量监测试题(3月考)(已下线)1.1 等腰三角形-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(北师大版)(已下线)1.3 线段的垂直平分线-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(北师大版)山西省太原市杏花岭区山西省实验中学2022-2023学年八年级下学期质检数学试卷(3月份)广东省茂名市 高州市第一中学附属实验中学2022-2023学年八年级下学期3月月考数学试题(已下线)专题03 线段垂直平分线的性质和判定(七大类型)(题型专练)-2023-2024学年八年级数学上册《知识解读·题型专练》(苏科版)(已下线)第02讲 线段垂直平分线的性质和判定(知识解读+真题演练+课后巩固)-2023-2024学年八年级数学上册《知识解读·题型专练》(人教版)江西省吉安市2022-2023学年八年级下学期期中数学试题(已下线)专题07等腰三角形的轴对称性(5个知识点8种题型2种中考考法)-【帮课堂】2023-2024学年八年级数学上册同步学与练(苏科版)湖南省永州市东安县2023-2024学年八年级上学期月考数学试题(已下线)专题04 等腰三角形与线段垂直平分线(八种考法)-【好题汇编】备战2023-2024学年八年级数学上学期期末真题分类汇编(湖南专用)云南省文山壮族苗族自治州丘北县2022-2023学年八年级下学期第一次月考数学试题(已下线)第04讲 垂直平分线和角平分线(知识解读+达标检测)-2023-2024学年八年级数学下册《知识解读·题型专练》(北师大版)(已下线)第09讲 等腰三角形的轴对称性(10大核心考点)-【暑假自学课】2024年新八年级数学暑假提升精品讲义(苏科版)
名校
5 . 如图,在
中,
,分别以点
、
为圆心,以适当的长为半径作弧,两弧分别交于
,
,作直线
,
为
的中点,
为直线
上任意一点,若
,
面积为12,则
长度的最小值为 ______ .
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc4c176e8432280c9a959cee8e35f22e.png)
您最近一年使用:0次
2024-03-02更新
|
29次组卷
|
8卷引用:山东省济南市长清区2021-2022学年七年级下学期期末数学试题
山东省济南市长清区2021-2022学年七年级下学期期末数学试题山东省济南市商河县2022-2023学年七年级下学期期末数学试题(已下线)第13单元02基础练(已下线)专题13.5 线段垂直平分线(分层练习)-2023-2024学年八年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题2.5 线段的轴对称性(分层练习)-2023-2024学年八年级数学上册基础知识专项突破讲与练(苏科版)(已下线)专题1.11 三角形的初步知识章末拔尖卷-2023-2024学年八年级数学上册举一反三系列(浙教版)山东省聊城市东阿县第三中学2023-2024学年八年级上学期期末数学试题山东省济南市章丘区章丘区实验中学2023-2024学年七年级下学期5月月考数学试题
6 . 如图,在
中,
.按以下步骤作图:①分别以点
和点
为圆心,以大于
的长为半径作弧,两弧相交于点
和点
;②作直线
交边
于点
.若
,
,则
的长为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7099026716ee1821dd7d9f157dc055f5.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/8d452f74791f58e8400cb8d2d6038dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4267c178771ea6ddccecd9f9128d3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae341f580ff8fbf21f616fe900b0e4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
7 . 已知,如图,
,
.
上,且
.(保留作图痕迹,不写作法)
(2)连接
,若
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26fdd8e57562ba94e10e7f1d770826d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
您最近一年使用:0次
2024-03-02更新
|
395次组卷
|
5卷引用:江苏省宿迁市泗洪县2023-2024学年八年级上学期期末数学试题
江苏省宿迁市泗洪县2023-2024学年八年级上学期期末数学试题2024年广东省汕尾市中考二模数学试题2024年广东省汕尾市中考一模数学试题(已下线)专题5.9 生活中的轴对称(全章知识梳理与考点分类讲解)-2023-2024学年七年级数学下册基础知识专项突破讲与练(北师大版)(已下线)专题06 生活中的轴对称(7大题型+优选提升题)-备战2023-2024学年七年级数学下学期期末真题分类汇编(北师大版)
8 . 如图,在
中,
,
,线段
的垂直平分线
交
于点F,交
于点E,交
的延长线于点D,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
______ .
![](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/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
您最近一年使用:0次
9 . 在
中,
,
,将
绕点
按顺时针方向旋转得到
,旋转角为
,点
的对应点为点
,点
的对应点为点
.
(1)如图,当
时,连接
、
,并延长
交
于点
,则
___________;
(2)当
时,请画出图形并求出
的长;
(3)在旋转过程中,过点
作
垂直于直线
,垂足为点
,连接
.当
,且线段
与线段
无公共点时,请猜想四边形
的形状并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3c5d2cbe5cfa47fde68ff3b5b81469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed16ce680141267b52afd170f3aac0ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/3dde30d3-3d28-402d-b1c2-cb64eb83ef6a.png?resizew=386)
(1)如图,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d02d80d4e2f6f984036bd22a1a2077b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ee0c2960df7e030db3bbb176ddd920.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629be4a6de577f13c9b0a524e7a5e383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)在旋转过程中,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c383ca209f32a97a38e40d3e60f967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df19df3b0eb0eedd2b9eaa440996fd8.png)
您最近一年使用:0次
10 . 如图,在
中,
,
,以
为边作等腰
,其中
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/ee8ef4f1-cea1-46b4-9054-e2344234587b.png?resizew=545)
(1)求证:
;
(2)作
的垂直平分线分别交
,
于点
,
.
①如图1,
,求证:
;
②如图2,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf82e97595128f030504932bd738e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb67f27bcda7681b19239a199b4c4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/ee8ef4f1-cea1-46b4-9054-e2344234587b.png?resizew=545)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d73bfafafc6b1418079f4f19ba55afd.png)
(2)作
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
①如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1212f222bed8b39156d13de8a35f40f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2147ce587401c2434a80fcfae59713a2.png)
②如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbab4a3f9636fe3eeee75ba79d08a52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faffe3765c15f53305516895aa595a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f223fda32883bf5b468f84c888ae8aa.png)
您最近一年使用:0次