如图,下列条件中:①
;②
;③
;④
;⑤
;⑥
,能得
的有_______________________ (只填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0bd8869f34219e7fbe5a9b8842667c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954b16d8eb0c910d3713944ba4297afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c321fd0a1cac7c5ed754f7f17e6a8b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0830826e23e2d74163088f70a610d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b90649d12a2b35235dd326a1deb7c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://img.xkw.com/dksih/QBM/2020/11/5/2586373393006592/2587934609932288/STEM/710409ac-80da-4044-9dfd-ba6f96330720.png?resizew=237)
18-19七年级下·山西太原·阶段练习 查看更多[2]
更新时间:2020-11-07 10:29:21
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【推荐1】已知:如图,点E、F分别是AB、CD上的点,DE、AF分别交BC于G、H,∠A=∠D,∠1=∠2,试说明∠B=∠C.阅读下面的解题过程,在横线上补全推理过程或依据.
解:∵∠1=∠2(已知)
∠1=∠3( )
∴∠2=∠3(等量代换)
∴AF∥DE( )
∴∠4=∠D( )
又∵∠A=∠D (已知)
∴∠4=∠A(等量代换)
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490216690114560/2492925061545984/STEM/ffe6bf9166ac40aa8c6544fb5ebc45f6.png?resizew=15)
______ ( )
∴∠B=∠C( )
解:∵∠1=∠2(已知)
∠1=∠3
∴∠2=∠3(等量代换)
∴AF∥DE
∴∠4=∠D
又∵∠A=∠D (已知)
∴∠4=∠A(等量代换)
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490216690114560/2492925061545984/STEM/ffe6bf9166ac40aa8c6544fb5ebc45f6.png?resizew=15)
∴∠B=∠C
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490216690114560/2492925061545984/STEM/d6509b30-03a9-4842-aeb5-b6f0a049686d.png?resizew=238)
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【推荐1】如图,点B、C、E在同一条直线上,请你写出一个能使
成立的条件:______ .(只写一个即可,不添加任何字母或数字)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/8ee99ff5-c603-4f2f-8d9d-5bbc8498670d.png?resizew=190)
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【推荐2】如图,如果
,那么可得___ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
___ ;如果
,那么可得___ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c0b509529b848f0b64620ed51fcd55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83df721c3ae03a70877905b9c053a111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/26/49d398f4-44b9-4ffb-a0cb-ecc857f2bbb6.png?resizew=144)
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【推荐1】如图,直线a、b被直线c所截,现给出下列四个条件:①∠2=∠6;②∠1=∠3;③∠1=∠7;④∠4+∠5=180°;其中能判定a//b的条件序号 是____________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/9e1b4400-fed2-4f68-ae1c-2db940166a76.png?resizew=134)
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【推荐2】如图,给出条件:①
;②
;③
;④
,其中能判定
的是____ .(注:填上所有符合条件的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e359046554390192a1b838ec67926819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a841e4a7609ee597901392c6ac3b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3114619fe234d7826f4bea84330aef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f122bae0c0115d65aa6c94e926d694a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
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