1 . 如图,
,射线
平分
,且
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/43b77724-844f-4a11-93c3-7fa6c40a8bd7.png?resizew=116)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7d56dc48eb8c2716a6bc6bdd5dd783.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/43b77724-844f-4a11-93c3-7fa6c40a8bd7.png?resizew=116)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 一副三角板
、
,如图1放置,(
、
),将三角板
绕点
逆时针旋转一定角度,如图2所示,且
,则下列结论中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/3/4cafe6c6-6d48-4c90-9c37-d241d7dcae0d.png?resizew=344)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152cfd5011c94e02c1a9cbbd4d8f58bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691048ce61c91a8a3680fa3025193160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152cfd5011c94e02c1a9cbbd4d8f58bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e95a63ddd03c4479bbf57a4f5abd70b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/3/4cafe6c6-6d48-4c90-9c37-d241d7dcae0d.png?resizew=344)
A.![]() ![]() |
B.在旋转过程中,若![]() ![]() ![]() ![]() ![]() |
C.在旋转过程中,两块三角板的边所在直线夹角成![]() |
D.在图1的情况下,作![]() ![]() ![]() |
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