如图,直线
,若
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a4352562ae8aa968014fd0d931b677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0440e79b4b817a2c7d9d05089962ae72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605f2976297a0deaa1602ef09d6a5afa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
23-24七年级下·湖南长沙·期中 查看更多[2]
更新时间:2024-05-21 15:20:29
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【推荐1】如图,已知直线a
b,∠1=70°,则∠2等于( )
![](https://img.xkw.com/dksih/QBM/2022/4/28/2967678511529984/2971283200876544/STEM/1185e85c-605e-4302-a366-d9dc65457777.jpg?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/2022/4/28/2967678511529984/2971283200876544/STEM/1185e85c-605e-4302-a366-d9dc65457777.jpg?resizew=161)
A.120° | B.110° | C.100° | D.90° |
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【推荐2】如图,直线AB,CD交于点O,OE平分∠AOC,
,OG平分∠EOF,若
,则∠AOG等于( )
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893538233876480/2950913395761152/STEM/cf470277-33a0-4702-b2dc-b170c491db8d.png?resizew=216)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebef5bab02280cdc99cc7f689135cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb7ca69c68f8f71441e4e98d398c00d.png)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893538233876480/2950913395761152/STEM/cf470277-33a0-4702-b2dc-b170c491db8d.png?resizew=216)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】为增强学生身体素质,感受中国的优秀传统文化,学校将国家级非物质文化遗产“抖空竹”引入阳光特色大课间,如图1是某同学“抖空竹”时的一个瞬间,王聪把它抽象成如图2的数学问题:已知
,
,
则
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![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/21ecce48-1a64-48e7-89c2-8af27f0fb5c0.png?resizew=178)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c638b22496fd8587bb4207463128453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/21ecce48-1a64-48e7-89c2-8af27f0fb5c0.png?resizew=178)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图所示,将三角尺的直角顶点放在直尺的一边上,
,
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/16/85020fff-2837-4082-b205-b05e955fd442.png?resizew=203)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b65ca62ce90b4879f58884e826c669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615c891c931323fc44eae27d03cd0bce.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/16/85020fff-2837-4082-b205-b05e955fd442.png?resizew=203)
A.![]() | B.![]() | C.![]() | D.![]() |
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