如图,已知等边三角形
,且
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
A.![]() | B.![]() | C.![]() | D.![]() |
2023·广西·模拟预测 查看更多[1]
更新时间:2024-04-15 09:08:51
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【推荐2】如图,AB
CD,直线EF与AB,CD分别交于点E,F,若∠BEF=120,则∠EFD的度数为( )
![](https://img.xkw.com/dksih/QBM/2022/6/6/2995400204951552/2999884445081600/STEM/cba8c8f739644065b858463f6a6eaf07.png?resizew=144)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/2022/6/6/2995400204951552/2999884445081600/STEM/cba8c8f739644065b858463f6a6eaf07.png?resizew=144)
A.60 | B.80 | C.120 | D.50 |
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【推荐1】如图,等边三角形ABC的边长为4,则点C的坐标是( )
![](https://img.xkw.com/dksih/QBM/2019/5/9/2200114068389888/2202322413830144/STEM/2c79ba0480e04c3cbbea3b6dff51d46f.png?resizew=148)
![](https://img.xkw.com/dksih/QBM/2019/5/9/2200114068389888/2202322413830144/STEM/2c79ba0480e04c3cbbea3b6dff51d46f.png?resizew=148)
A.(4,-2) | B.(4,2) | C.(-2,![]() | D.(2![]() |
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【推荐2】如图,在五边形 ABCDE中,AB=AC=AD=AE,且AB//ED,∠EAB=120°,则∠DCB的度数是( )
![](https://img.xkw.com/dksih/QBM/2019/10/8/2307592809947136/2309678612807681/STEM/b8ea99a0ed52444fba76868b2b77887d.png?resizew=131)
![](https://img.xkw.com/dksih/QBM/2019/10/8/2307592809947136/2309678612807681/STEM/b8ea99a0ed52444fba76868b2b77887d.png?resizew=131)
A.120° | B.130° | C.140° | D.150° |
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