第1章 图形的相似 单元测试 青岛版九年级数学上册
全国
九年级
单元测试
2023-05-24
309次
整体难度:
容易
考查范围:
图形的变化、图形的性质
一、单选题 添加题型下试题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
A.一定相似 |
B.一定不相似 |
C.不一定相似 |
D.无法判断 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e317c69d692137a4ccb626a9ba47718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc11a3076fc33ae2c9f7b3ae44107da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db937afbab9e16fe9ed801ec16fbbb1.png)
A.1个 | B.2个 | C.3个 | D.4个 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70871dec5531bcb4554fe52d0773b1c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82dbadbb246983e110ac689a817ddec.png)
![](https://img.xkw.com/dksih/QBM/2020/2/13/2397967943720960/2398160493002752/STEM/fb6d5912f1394f5e8d8bd4c8d95ad434.png?resizew=199)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 相似三角形的判定与性质综合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/2022/1/29/2904847671066624/2926849218805760/STEM/6044228e5cc14f6ebd74bab3405e379e.png?resizew=109)
A.1:4 | B.1:6 | C.1:8 | D.1:9 |
【知识点】 相似三角形的判定与性质综合
![](https://img.xkw.com/dksih/QBM/2020/2/7/2393691223711744/2394171557765120/STEM/8390c7356e774444818cb70c5393d492.png?resizew=102)
A.4 | B.6 | C.8 | D.7 |
【知识点】 相似三角形的判定与性质综合
![](https://img.xkw.com/dksih/QBM/2018/12/25/2104235175845888/2107288970051584/STEM/cdefb172393848dd99873255ac4f9c8c.png?resizew=158)
A.E为AC的中点 | B.DE是中位线或AD·AC=AE·AB |
C.∠ADE=∠C | D.DE∥BC或∠BDE+∠C=180° |
【知识点】 相似三角形的判定与性质综合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
A.2:1 ![]() | B.1:![]() ![]() | C.1:2 ![]() | D.1:4 |
【知识点】 利用相似三角形的性质求解解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4806fb7f95f63e863c287faa51f8e3.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/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://img.xkw.com/dksih/QBM/2021/6/18/2745508029407232/2745710044504064/STEM/34b7f2ef-8053-4157-ad9e-c54022702c8f.png)
A.8 | B.9 | C.10 | D.15 |
【知识点】 求两个位似图形的相似比
二、填空题 添加题型下试题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2964fea2c107bbfd4a07fc97f4de5988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216e4003cb76fc52b251e38a0afdd202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d0157310b49104bd2f604b4f83ecd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a1e2531e2ae0201545eca2e4570a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3e4f47ca9f02c5b4d67dc7d02c3d89f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/050294162a78c6f4d6a87849bd3049a3.png)
译文:“今有一座长方形小城,东西向城墙长7里,南北向城墙长9里,各城墙正中均开一城门.走出东门15里处有棵大树,问走出南门多少步恰好能望见这棵树?”(注:1里=300步)
你的计算结果是:出南门
![](https://img.xkw.com/dksih/QBM/2019/7/7/2241930207346688/2243652457955328/STEM/2402a434c70b45389a6e0ec9cd85b8f3.png?resizew=181)
三、解答题 添加题型下试题
(1)如图1,Q在AC上,当t为多少秒时,以点A、P、Q点的三角形与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
(2)如图2,Q在CB上,否存着某时刻,使得以点B、P、Q顶点的三角形与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://img.xkw.com/dksih/QBM/2021/12/9/2868706205229056/2869404913475584/STEM/0f943e26-6232-4787-9533-74e32c0d3823.png?resizew=466)
【知识点】 相似三角形——动点问题解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef202bebb4e139f5e201d6adefdded4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/7/ef21c6d8-4490-4fe0-afbb-56c7ce8999f9.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fa62c81793e59227848d058ad24767.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7968315664d35dcf825a02b4f056291.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f54ffe461cd49e7b24a1a1af64ad17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
【知识点】 利用菱形的性质证明解读 相似三角形的判定与性质综合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/24/a2da8f06-aeaf-45d0-b7f2-08189550c22a.png?resizew=366)
【知识点】 在网格中画与已知三角形相似的三角形解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/7/e20e8bc4-7e59-4851-b868-1a30c0d55c41.png?resizew=202)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/405e1f38f1db7ec3d99e435df2158d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ae2d8122aecb3f04c7b1160d3a67ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9179bee09452bbd0e5080501bb0ee9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e1b8d4ff2382d73f5f8cc8af7dbac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e89daa260fa54127e2885b0162d1274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
【知识点】 利用相似三角形的性质求解解读 判断位似中心解读
(1)利用位似作图的方法,以点O为位似中心,可将格点三角形ABC扩大为原来的2倍.请你在网格中完成以上的作图(点A、B、C的对应点分别用A′、B′、C′表示);
(2)当以点O为原点建立平面坐标系后,点C的坐标为(﹣1,2),则A′、B′、C′三点的坐标分别为:A′: B′: C′: .
![](https://img.xkw.com/dksih/QBM/2019/4/11/2180175361048576/2184199043973120/STEM/ccb559eb69dd421cbd392ee275db7ed3.png?resizew=200)
【知识点】 在坐标系中画位似图形解读
试卷分析
试卷题型(共 24题)
试卷难度
知识点分析
细目表分析 导出
题号 | 难度系数 | 详细知识点 | 备注 |
一、单选题 | |||
1 | 0.85 | 相似图形 | |
2 | 0.85 | 相似多边形的性质 | |
3 | 0.85 | 证明两三角形相似 | |
4 | 0.94 | 证明两三角形相似 | |
5 | 0.65 | 利用平行四边形性质和判定证明 与三角形中位线有关的证明 相似三角形的判定与性质综合 | |
6 | 0.65 | 相似三角形的判定与性质综合 | |
7 | 0.85 | 相似三角形的判定与性质综合 | |
8 | 0.94 | 相似三角形的判定与性质综合 | |
9 | 0.65 | 相似三角形的判定与性质综合 | |
10 | 0.94 | 利用相似三角形的性质求解 | |
11 | 0.94 | 求两个位似图形的相似比 | |
12 | 0.85 | 位似图形的识别 | |
二、填空题 | |||
13 | 0.4 | 利用平行四边形的判定与性质求解 相似三角形的判定与性质综合 | |
14 | 0.85 | 相似三角形应用举例 | |
15 | 0.65 | 相似三角形应用举例 | |
16 | 0.85 | 利用相似三角形的性质求解 | |
三、解答题 | |||
17 | 0.65 | 证明两三角形相似 | 证明题 |
18 | 0.65 | 相似三角形——动点问题 | 问答题 |
19 | 0.65 | 相似三角形的判定与性质综合 | 证明题 |
20 | 0.65 | 利用菱形的性质证明 相似三角形的判定与性质综合 | 证明题 |
21 | 0.85 | 相似三角形应用举例 | 问答题 |
22 | 0.85 | 在网格中画与已知三角形相似的三角形 | 作图题 |
23 | 0.65 | 利用相似三角形的性质求解 判断位似中心 | 作图题 |
24 | 0.65 | 在坐标系中画位似图形 | 作图题 |