1 . 如图,在
中,
,根据尺规作图的痕迹判断,以下结论中不正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/d15c5643-30d1-40d1-bfa9-85f8fa88c025.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/d15c5643-30d1-40d1-bfa9-85f8fa88c025.png?resizew=146)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 综合与探究
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/43ced3b6-4244-4350-946a-bff7d839cc6b.png?resizew=342)
(1)【基础巩固】如图1,在
中,
,
.
平分
,
的垂直平分线交
于点
,交
于点
,连接
,试判断
的形状,并说明理由.
(2)【深入探究】如图1,在(1)的条件下,连接
,试猜想
和
的位置关系,并证明你的结论.
(3)【拓展提高】如图2,在(2)的条件下,N是
上一点,连接
,作
,交
的延长线于点G,延长
到点H,使得
,连接
,试探究
和
之间的数量关系,并证明你的判断正确.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/43ced3b6-4244-4350-946a-bff7d839cc6b.png?resizew=342)
(1)【基础巩固】如图1,在
![](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/7c646c683fbe522edb7ea54fd3ad873d.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
(2)【深入探究】如图1,在(1)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)【拓展提高】如图2,在(2)的条件下,N是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b637068887e4a082e65c993213e770e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f469a9ed35e6b6a8bbc718c09547a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9d2abf13c2842f58654abf73c6b4ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
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3 . 新概念:我们把对角线互相垂直的四边形叫做垂美四边形.
(1)概念理解:如图①,在四边形
中,如果
,那么四边形
是垂美四边形吗?请说明理由.
(2)性质探究:小美同学猜想“垂美四边形两组对边的平方和相等”,即,如图②,在四边形
中,
与
相交于点
,若
,则
.请判断小美同学的猜想是否正确,并说明理由.
(3)问题解决:如图③,分别以Rt
的直角边
和斜边
为边向外作正方形
和正方形
,连接
.若
,
,则
①求证:
.
②
______.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/25/a8f07425-10c2-4300-b420-cb8169bf0121.png?resizew=475)
(1)概念理解:如图①,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7728e0e511ee3721ddac96919c4e2206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)性质探究:小美同学猜想“垂美四边形两组对边的平方和相等”,即,如图②,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20324c4262b72d72b6624ef90675827.png)
(3)问题解决:如图③,分别以Rt
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b40c2b0ab8e1cfe5112d428b4b829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7a0bfc593a8a33b6cade6ba213904c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91be518485edbdc47ecd28f13652aaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edac1377d441d38ce6479a7c11aa76ac.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7b191b1305cb8115e84436aa85df7c.png)
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4 . 如图,在
中,
,图中所作直线
与射线
交于点D,点D在
边上,根据图中尺规作图痕迹,判断以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633fa64d9823c99687c6ac42387926cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-04-15更新
|
300次组卷
|
3卷引用:2023年吉林省长春市净月高新区中考一模数学试题
5 . 在
中,要判断
和
的大小关系(
和
均为锐角),同学们提供了许多方案,老师选取其中两位同学的方案(如图1和图2)对于方案Ⅰ、Ⅱ说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52725baa26f9ceb7fb0983ebb868e925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e8f6faf46c448fe8d838fde1af495b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52725baa26f9ceb7fb0983ebb868e925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e8f6faf46c448fe8d838fde1af495b.png)
方案Ⅰ: ①以点A为圆心, ②观察点C与
图1 | 方案Ⅱ: ①作边 ②观察
图2 |
A.Ⅰ可行、Ⅱ不可行 | B.Ⅰ不可行、Ⅱ可行 | C.Ⅰ、Ⅱ都可行 | D.Ⅰ、Ⅱ都不可行 |
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2023-06-05更新
|
99次组卷
|
3卷引用:2023年河北省邯郸市育华中学中考四模数学试题
名校
6 . 【阅读材料】
【解答问题】
请你判断小明的作法是否正确,并说明理由.
老师的问题: 已知:如图,直线 ![]() ![]() ![]() ![]() 求作:菱形 ![]() ![]() ![]() ![]() ![]() ![]()
| 小明的作法: (1)分别以A和 ![]() ![]() ![]() ![]() (2)作直线 ![]() ![]() ![]() ![]() ![]() (3)连接 ![]() ![]() 四边形 ![]()
|
请你判断小明的作法是否正确,并说明理由.
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2023-06-01更新
|
202次组卷
|
5卷引用:2023年江苏省南通市海门市中考一模数学试题
7 . 如图,在Rt△ABC中,∠ACB=90°,根据尺规作图的痕迹判断以下结论正确的是______ .
①∠DBC=∠BDC ②AE=BE ③
④∠BAE=∠ACD
①∠DBC=∠BDC ②AE=BE ③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71622531dfa894f21b2da123d020d24.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/0ea59fa9-3069-4d0c-865f-266905f4813c.png?resizew=158)
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2022-05-18更新
|
457次组卷
|
5卷引用:第二节 尺规作图03综合测
(已下线)第二节 尺规作图03综合测(已下线)第二节 尺规作图02小题测2022年宁夏吴忠市(市直、利通区)初中学业水平模拟数学试题(已下线)专题1.6 矩形的性质与判定(基础篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(北师大版)广西壮族自治区来宾市武宣县二塘镇中学2022-2023学年八年级上学期期中数学试题