请把以下证明过程补充完整,并在下面的括号内填上推理理由:
,
.
求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
证明:∵
,(已知)
又:∵
,___________
∴
___________,(等量代换)
∴
___________
∴
___________
∵
(已知)
∴
___________(等量代换)
∴___________
___________
∴
___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439fbb8974a5f907205d26b47b420bf4.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
又:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50ce9ef89a466df68124a1dccff5663.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc310194575262fb45352c2fbc19868.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a293aeccaeb6292de523a7c35efc4e0e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f578ea8f3cde97c11316f07c75aa2b76.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439fbb8974a5f907205d26b47b420bf4.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7960538cb70fcf641b94864a90190d.png)
∴___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec08e5a3ac603813b03c82ba977f67e4.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
2024七年级下·全国·专题练习 查看更多[2]
(已下线)第06讲 平行线的性质(1个知识点+6类热点题型讲练+习题巩固)-【帮课堂】2023-2024学年七年级数学下册同步学与练(人教版)(已下线)专题02 平行线的判定与性质-【帮课堂】2023-2024学年七年级数学下册同步学与练(人教版)
更新时间:2024-04-15 09:07:08
|
【知识点】 根据平行线判定与性质证明
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【推荐2】如图,点C、E、F、B在同一条直线上,CE=BF,AB=DC,AB∥DC.求证:∠A=∠D.
![](https://img.xkw.com/dksih/QBM/2022/4/4/2951001316286464/2952918155337728/STEM/01997b09625345f3b996cdfce819b44c.png?resizew=110)
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