已知三角形的三个内角的度数比为
,则它的最小外角度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014510bd35fd8d7a411384263755d5d5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-01-06 21:39:00
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【推荐1】如图,AB
CD,点E在AB上,∠AEC=60°,∠EFD=130°.则∠CEF的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/22/91daf7d1-8973-41b3-900f-7e0169c47818.png?resizew=203)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/22/91daf7d1-8973-41b3-900f-7e0169c47818.png?resizew=203)
A.60° | B.70° | C.75° | D.80° |
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【推荐1】在一个三角形中,三个内角之比为
,则这个三角形是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77caf4a32016d5779b5e2dcde9b228dc.png)
A.锐角三角形 | B.直角三角形 | C.钝角三角形 | D.等边三角形 |
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【推荐2】如图,在
中,
,
,
是
边上一点,连接
,将
沿
翻折,使A点落在
边上的
点处,则
为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/86b60073-904b-4281-817a-d29ff049f7be.png?resizew=202)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e9afccb06630e2e5341b6441c6b5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3e081637bcea5368cc72370bae283b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/86b60073-904b-4281-817a-d29ff049f7be.png?resizew=202)
A.![]() | B.![]() | C.![]() | D.![]() |
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