1 . 图
是光伏发电场景,其示意图如图
,
为吸热塔,
处各安装定日镜(介绍见图
).绕各中心点(
,
),使过中心点的太阳光线经镜面反射后到达吸热器点
处.现测得
,
(提示:三角形的内角和为
).
(1)若过点
作
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46475980248ce4710813449a3533429a.png)
________ .
(2)设
,
,则
与
的数量关系是 _________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c110d865b032b2def2aa61780563ed4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c819512dd571775bceed3e3c8695d758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
图1 | 图2 | 图3 |
| | 定日镜由支架、平面镇等组成,支架与镜面交点为中心点,支架与地平行线垂直. |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660f1957af9e41714cef8a14ba18e8ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46475980248ce4710813449a3533429a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a978e57e8d08ca663f9ee2ca41184b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b02dcf82b60df7d0a96837c9fc1313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
您最近一年使用:0次
2 . 如图,
是
的平分线,
,则
等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/60e49a6f-956e-4909-8ade-b38fb87e8b8f.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35803969509655f72b4118503ae1c966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8601d3d4a708a27103bb13f70c709ea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/60e49a6f-956e-4909-8ade-b38fb87e8b8f.png?resizew=155)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 图①、图②、图③均是
的正方形网格,每个小正方形的顶点称为格点,
的顶点A在格点上,格点B在边
上,按下列要求在给定的网格中画图,不要求写出画法,保留作图痕迹.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/4c06c3dd-fddb-4ea3-8a71-308358a3677d.png?resizew=610)
(1)在图①中画出
的一个补角
.
(2)在图②中画出
的一个余角
.
(3)在图③画出一个
,使
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954253b16a82489bb0e152543428c68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/4c06c3dd-fddb-4ea3-8a71-308358a3677d.png?resizew=610)
(1)在图①中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8fd11eb555e1e64a6bac8afe59a557.png)
(2)在图②中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94d2506539ad8760cf7ed366c0c537c.png)
(3)在图③画出一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecfb9907bc291a0098fde7c53261a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d61c5d46c976eb8d184e06830273fa8.png)
您最近一年使用:0次
4 .
的余角是___________ ,它的补角是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ffa32dca8f4b4d885bc97b89eaabe2.png)
您最近一年使用:0次
5 . 已知
的度数是
,则
补角的度数是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ba5898d0662b74ce3be57a83dd8f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
您最近一年使用:0次
6 . 如果
,那么
的补角的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e2ad6215a3e1fd7b3552fb35850553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 .
中,
,点D,E分别是
边
上的点,点P是一动点.令
,
,
.
![](https://img.xkw.com/dksih/QBM/2023/9/28/3334579715637248/3335188466778112/STEM/9f6bb0c96dff4862924d63fb14e8406b.png?resizew=330)
![](https://img.xkw.com/dksih/QBM/2023/9/28/3334579715637248/3335188466778112/STEM/83d103b7e5cd4133942c479b9d533daa.png?resizew=225)
(1)若点P在线段
上,如图1所示,且
,求
的度数.
(2)若点P在边
上运动,如图2所示,则
,
,
之间有何关系?猜想并说明理由.
(3)若点P运动到边
的延长线上,如图3所示,
交
于点M,
,
,
之间的关系为__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6d50515fc65885d44cd6a3c41e6a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307773456102f4d7ea664385029acdc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004fffe57568c3cb76d43794584da944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4626c693586583b09c3008f1d81a76a.png)
![](https://img.xkw.com/dksih/QBM/2023/9/28/3334579715637248/3335188466778112/STEM/9f6bb0c96dff4862924d63fb14e8406b.png?resizew=330)
![](https://img.xkw.com/dksih/QBM/2023/9/28/3334579715637248/3335188466778112/STEM/83d103b7e5cd4133942c479b9d533daa.png?resizew=225)
(1)若点P在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0664699cab2130e2b8fb5d976848418b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4678ff1b3ea3bd09ed3494a0efe31c.png)
(2)若点P在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
(3)若点P运动到边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
您最近一年使用:0次
8 . 一个锐角的余角比它的补角( )
A.相等 | B.小![]() | C.大![]() | D.不能确定大小 |
您最近一年使用:0次
9 . 如图,已知
,
是
的平分线,
是
的平分线.
(1)分别指出图中
和
的补角;
(2)若
,求
和
的度数;
(3)
和
具有怎样的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1e39455eb61da66fef7a4ca245c5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/10/94e2d114-ad65-4a4b-bbfa-e4dc4c533140.jpg?resizew=151)
(1)分别指出图中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826fa702e700b8536f77e44b134ce334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9de708d1544ebe0b82e7e6e2102382.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419bb7b9a2656959adfdbc121b0db589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6463e5b629f54a517050d1327580aa5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588abe296d53dbbce91d0c693322bf8c.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6463e5b629f54a517050d1327580aa5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588abe296d53dbbce91d0c693322bf8c.png)
您最近一年使用:0次
2023-09-09更新
|
171次组卷
|
3卷引用:河北省唐山市曹妃甸区2022-2023学年七年级下学期开学考试数学试题