题型:解答题-证明题
难度:0.85
引用次数:646
题号:15598652
已知:如图,C,D是直线AB上两点,∠1+∠2=180°,DE平分∠CDF,EF//AB,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/fffd30c2-aff4-41c1-9521-c891ef84de7a.png?resizew=201)
(1)求证:CE//DF;
(2)若∠DCE=130°,求∠DEF的度数.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/fffd30c2-aff4-41c1-9521-c891ef84de7a.png?resizew=201)
(1)求证:CE//DF;
(2)若∠DCE=130°,求∠DEF的度数.
更新时间:2022-04-21 14:18:30
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【知识点】 根据平行线判定与性质求角度解读
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又∵
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