看图填空,并在括号内说明理由: 如图,已知∠BAP与∠APD互补,∠1=∠2,说明∠E=∠F.
证明:∵∠BAP与∠APD互补( ) , ∴AB∥CD( ) ,
∴∠BAP=∠APC( ) .
又∵∠1=∠2( ) ,
∴∠BAP﹣∠1=∠APC﹣∠2( ) ,即∠3=∠4,
∴AE∥PF,( ) ,
∴∠E=∠F( ) .
证明:∵∠BAP与∠APD互补
∴∠BAP=∠APC
又∵∠1=∠2
∴∠BAP﹣∠1=∠APC﹣∠2
∴AE∥PF,
∴∠E=∠F
![](https://img.xkw.com/dksih/QBM/2017/11/18/1819834946928640/1820479628050432/STEM/fc9e957dfb2c4239a75ca5877d68d03e.png?resizew=194)
更新时间:2017-11-19 11:18:11
|
【知识点】 根据平行线判定与性质证明
相似题推荐
填空题
|
较易
(0.85)
【推荐1】如图,点E,F分别在AB,CD上,DE,BF分别交AC于点G,H,且
,
,求证:
.
![](https://img.xkw.com/dksih/QBM/2021/6/10/2740183587430400/2801588529364992/STEM/0270bfad-6a7e-4977-b658-e73bb2cb68ea.png)
证明:∵
(已知),
(_____________________).
∴_____________________(等量代换)
∴
(_____________________).
∴
∠_____________________(_____________________).
又∵
(已知),
∴
∠_____________________(等量代换).
∴
(_____________________).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1717b5311ed602f1730e86d9322647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd85cff10e8f192cfe0b0a8b2f4996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://img.xkw.com/dksih/QBM/2021/6/10/2740183587430400/2801588529364992/STEM/0270bfad-6a7e-4977-b658-e73bb2cb68ea.png)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1717b5311ed602f1730e86d9322647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a65381fde9cbfdc06d5c2e35aa80d1.png)
∴_____________________(等量代换)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d2f152a8da561c9eeb6ba2ef091dc2.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7960538cb70fcf641b94864a90190d.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd85cff10e8f192cfe0b0a8b2f4996.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afde09d82ae96f00c135732baee64776.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
您最近一年使用:0次
填空题
|
较易
(0.85)
名校
【推荐2】如图,
、
、
三点共线,
与
是等边三角形,
于点
,
平分
交
于点
,
与
相交于点
,连接
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bcfb91bf2911f80be6a2dcf42ae3aa.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5d3f1c7f7ffdf572978468d5a3adde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bcfb91bf2911f80be6a2dcf42ae3aa.png)
![](https://img.xkw.com/dksih/QBM/2022/1/16/2901382203424768/2904957854810112/STEM/7f509d66-7190-49f2-a0b5-33068767c348.png?resizew=169)
您最近一年使用:0次