名校
1 . 如图,
,直线a,b相交于点
,与这三条平行线分别相交于点A、B、C和点D、E、F,下列比例式中错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/26/d4d2fc03-6590-4bf6-b854-4655a9f0357e.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b64254ccf2bf88337f4e88055a0cc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/26/d4d2fc03-6590-4bf6-b854-4655a9f0357e.png?resizew=171)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-02-23更新
|
383次组卷
|
8卷引用:湖南省岳阳市城区2022-2023学年九年级上学期期末教学质量监测数学试题
湖南省岳阳市城区2022-2023学年九年级上学期期末教学质量监测数学试题湖南省岳阳市岳阳楼区2022-2023学年九年级上学期期末数学试题(已下线)猜想07 相似三角形(四种基本模型专练)-2023-2024学年九年级数学上学期期末考点大串讲(人教版)(已下线)专题13 图形相似、相似三角形与位似作图及性质之十大题型-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(人教版)重庆市第一中学校2023-2024学年九年级上学期数学开学考试试题湖南省永州市零陵区2023-2024学年九年级上学期期中数学试题安徽省池州市贵池区2023-2024学年九年级上学期联考数学试题(已下线)专题05 比例线段与平行线分线段成比例(五种考法)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(湖南专用)
2 . 如图,由边长为1个单位长度的小正方形组成的9×9网格中,已知点O,A,B,C均为网格线的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/adac6d30-186d-4d97-8a1c-c58c17ebefb5.png?resizew=200)
(1)以O为位似中心,在网格中画出
的位似图形
,使原图形与新图形的位似比为1:2;
(2)利用图中网格线的交点用直尺在线段
上找到一点D,使
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/adac6d30-186d-4d97-8a1c-c58c17ebefb5.png?resizew=200)
(1)以O为位似中心,在网格中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)利用图中网格线的交点用直尺在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa694fa8c2a39f0b9e9abdde51805e8.png)
您最近一年使用:0次
2023-02-21更新
|
108次组卷
|
3卷引用:安徽省宣城市2022-2023学年九年级上学期数学期末调研试题
3 . 已知:如下图,
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5277fa450a0c513a86a74420f8ee99f6.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b14e543a0b4950752a4a26bec7221c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d649afbddd907f0dfec1420f02f82fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5277fa450a0c513a86a74420f8ee99f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/6debafe0-6a80-4f79-a24f-8108f6016771.png?resizew=150)
您最近一年使用:0次
2023-02-19更新
|
278次组卷
|
4卷引用:湖南省永州市道县2022-2023学年九年级上学期期末质量监测数学试题(A卷)
湖南省永州市道县2022-2023学年九年级上学期期末质量监测数学试题(A卷)河南省驻马店市泌阳县2023-2024学年九年级上学期期中数学试题(已下线)第4章 图形的相似(单元测试·基础卷)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)(已下线)专题05 比例线段与平行线分线段成比例(五种考法)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(湖南专用)
4 . “关联”是解决数学问题的重要思维方式.角平分线的有关联想就有很多……
(1)如图①,
是
的角平分线,求证
.
请根据小明或小红的思路,选择一种并完成证明.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/9cb9ce9c-f688-4cd8-b804-b311d38ca7c3.png?resizew=142)
【作图应用】
(2)如图②,
是
的弦,在
上作出点P,使得
.
要求:(1)用直尺和圆规作图;(2)保留作图的痕迹,写出必要的文字说明.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/1ac43dff-df89-40d5-9439-6406ea646c85.png?resizew=126)
【深度思考】
(3)如图③,
是
的角平分线,若
,则
的面积最大值是______.
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ede962f59496038e45f8f614071adb3.png)
小明思路:关联“平行线、等腰三角形”,利用“三角形相似”. 小红思路:关联“角平分线上的点到角的两边的距离相等”,利用“等面积法”. |
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/9cb9ce9c-f688-4cd8-b804-b311d38ca7c3.png?resizew=142)
【作图应用】
(2)如图②,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8902a0d64b7b8e6a8e55eb037b88c300.png)
要求:(1)用直尺和圆规作图;(2)保留作图的痕迹,写出必要的文字说明.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/1ac43dff-df89-40d5-9439-6406ea646c85.png?resizew=126)
【深度思考】
(3)如图③,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bd7b6e1c2ebd1b944ae16f053ddd6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/49d09f82-7901-4b6f-bfb7-1a770cadefa4.png?resizew=162)
您最近一年使用:0次
2023-02-18更新
|
669次组卷
|
5卷引用:江苏省南京市联合体2022-2023学年九年级上学期期末数学试题
江苏省南京市联合体2022-2023学年九年级上学期期末数学试题江苏省南京市六合区2022-2023学年九年级上学期期末数学试题江苏省盐城市2023-2024学年九年级上学期期末数学试题2023年江苏省宿迁市中考一模数学试题(已下线)专题09圆的有关位置关系及计算1(十大类型)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(苏科版)
5 . 如图,
,则下列比例式成立的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/e6242c45-6cbc-4560-93df-3c2bff152a7f.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b64254ccf2bf88337f4e88055a0cc4a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/e6242c45-6cbc-4560-93df-3c2bff152a7f.png?resizew=146)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-18更新
|
286次组卷
|
6卷引用:江苏省南京市联合体2022-2023学年九年级上学期期末数学试题
江苏省南京市联合体2022-2023学年九年级上学期期末数学试题江苏省南京市六合区2022-2023学年九年级上学期期末数学试题(已下线)专题05 比例线段与平行线分线段成比例(五种考法)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(北师大版)江苏省扬州市江都区邵樊片区2022-2023学年九年级下学期第一次质量检测数学试卷(已下线)第01讲 图形的相似(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学上册《知识解读·题型专练》(北师大版)(已下线)专题03 图形的相似(十大类型)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(苏科版)
6 . 如图,
中,点
、
分别在边
、
上,
,若
,
,
,则
的长是__________ .
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105068b25f5a63af32f4082cfe08691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1e7f5a2a4b85244fe9dc569009cf9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f218914337edd06e59e75d90b777e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://img.xkw.com/dksih/QBM/2022/11/26/3117842913460224/3175882845077504/STEM/d71f54f54e24478ea1024cb2a8cc6de6.png?resizew=146)
您最近一年使用:0次
2023-02-16更新
|
229次组卷
|
6卷引用:广西壮族自治区柳州市鱼峰区2022-2023学年九年级上学期期末数学试题
7 . 如图,在平面直角坐标系中,
的顶点
在
轴正半轴上,
是
的中线,点
,
在反比例函数
的图象上,则
的面积等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.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/498bcfd1aac03057dcd0adef2dd113a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/2b54944a-9bda-4afe-ac74-d7b60b5e1c9e.png?resizew=126)
您最近一年使用:0次
8 . 如图,直线
,直线
分别与
,
,
相交于点
、
、
,直线
分别与
,
,
相交于点
,
,
,已知
,
,则
的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/d9986ecf-078d-422c-af41-c40d42ed862f.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b64254ccf2bf88337f4e88055a0cc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56391cc09f9553c291a710954d9405ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea147ada4f0aefdd3808a6a1133792eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/d9986ecf-078d-422c-af41-c40d42ed862f.png?resizew=162)
A.6 | B.4 | C.5 | D.10 |
您最近一年使用:0次
9 . 如图,在
中,
、
、
分别为边
、
、
上的点,
,
,
分别交
、
于点
、
,且
,
,
,有下面四个结论:
①
;
②
;
③
;
④
.
其中所有正确结论的序号是___________ .
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f081eb23d83e39c604fd0e240210559d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0565bafba84b317d92ac6855ab1c3468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a329bec5627bf0eb930d1406ac13e483.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1e09818a693e991973ae3fd1e4431e.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474800ebdf053711a7d6b225c4d93e60.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59b3f4689179d7d1a500a9f67c0f730.png)
其中所有正确结论的序号是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/14/250a1296-3356-4f7e-96e0-6aeb8e0a4a0c.png?resizew=143)
您最近一年使用:0次
10 . 如图,在平面直角坐标系
中,点A在x轴负半轴上,点
,连接
交y轴于点B.若
, 则
的值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/13/e6f616bf-85ff-4b24-b5ce-cc3e08688ec7.png?resizew=211)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bd6ba269868d5def265c90a66bbefc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620dfa95e8515510d11abacb3a39d617.png)
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2023-02-11更新
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6卷引用:福建省漳州市2022-2023学年九年级上学期教学质量检测(北师大版)数学试卷(B卷)