如图,直线AB,CD相交于点O,所形成的∠1、∠2、∠3和∠4中,一定相等的角有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/62cf9e21-8a5e-4d0a-b2a6-790ca5110b27.png?resizew=150)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/62cf9e21-8a5e-4d0a-b2a6-790ca5110b27.png?resizew=150)
A.0对 | B.1对 | C.2对 | D.4对 |
更新时间:2018-03-08 22:45:19
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【推荐1】如图,直线
,
交于点O.射线
平分
,若
,则
等于( )
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967029691146240/2971383534592000/STEM/00498f7c-4fa1-475a-84a5-52b9f8b0092a.png?resizew=192)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/ce63e548470d6f30df1e98fe42fb639b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9de708d1544ebe0b82e7e6e2102382.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967029691146240/2971383534592000/STEM/00498f7c-4fa1-475a-84a5-52b9f8b0092a.png?resizew=192)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,已知
,现将一直角三角板放入图中,其中
,
,
与
分别交于
与
分别交于
.则下列结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/3f50ce96-eb1c-4499-ab4e-977c16367f3e.png?resizew=147)
①
;
②
;
③
;
④
.
其中一定正确的结论有()
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7b63537336fea79312cbfb82831320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99256fcfc0f71e0e8992c2cf40b93cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead7537a53f3bc6411cadbe66a5501b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc43ed4b8d1c2b6d2bb6a48dcf81d42f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351000ee05327ddfb4ed9320127420c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/3f50ce96-eb1c-4499-ab4e-977c16367f3e.png?resizew=147)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5101c0387a8e8f327aca9b8f1a78e80f.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beeea66e345c68ee49385d9441ec893.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6dcd331df0da745928fdb9c0b002584.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a71a6a02e2ee2de60d61c2e8e7a30b6.png)
其中一定正确的结论有()
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次