如图,在
ABC中,直线ED是线段BC的垂直平分线,直线ED分别交BC、AB于点D、点E,已知BD=3,
ABC的周长为20,则
AEC的周长为( )
![](https://img.xkw.com/dksih/QBM/2021/3/22/2683281043349504/2683620372594688/STEM/cd68e1b4eb8c43ac860b17696b6a29be.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/2021/3/22/2683281043349504/2683620372594688/STEM/cd68e1b4eb8c43ac860b17696b6a29be.png?resizew=166)
A.14 | B.20 | C.16 | D.12 |
18-19八年级上·山东德州·期中 查看更多[3]
山东省德州市陵城区2018-2019学年八年级上学期期中数学试题(已下线)专题08线段的垂直平分线-2022年【寒假分层作业】八年级数学(北师大版)广东省茂名市电白区2021-2022学年八年级下学期期中考试数学试题
更新时间:2021-04-09 07:46:33
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【知识点】 线段垂直平分线的性质解读
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【推荐1】如图,在△ABC中,
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【推荐2】如图,在
中,
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