如图,在
中,点
在
的延长线上,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/dc25080a-2095-4724-9a3f-bd231dfa4b36.png?resizew=165)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a1f81f549b552938dbffd34143b6256.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d715af2d0f55f1f8855361afee3fd0f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/dc25080a-2095-4724-9a3f-bd231dfa4b36.png?resizew=165)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2022-11-26 16:35:40
|
【知识点】 三角形的外角的定义及性质解读
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|
容易
(0.94)
【推荐2】如图,∠ACD是
ABC的外角,CE平分∠ACD,若∠A=60°,∠B=40°,则∠ECD等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/c21f1798-ee96-4968-91d8-2982a73e0cfa.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/c21f1798-ee96-4968-91d8-2982a73e0cfa.png?resizew=166)
A.100° | B.40° | C.60° | D.50° |
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