如图,
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcebd58f9d4e1b344bb582410b8b9456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a6c6bbdec15e69e9343be1fb58ce3cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beff025b32f688316009552d2fd8e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaae99b4ac308549134169e69247a6.png)
更新时间:2024-05-06 23:08:41
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【知识点】 根据平行线判定与性质证明
相似题推荐
解答题-证明题
|
较易
(0.85)
【推荐1】在横线上完成下面的证明,并在括号内注明理由.
已知:如图,∠ABC+∠BGD=180°,∠1=∠2.
求证:EF∥DB.
证明:∵∠ABC+∠BGD=180°,(已知)
∴ .( )
∴∠1=∠3.( )
又∵∠1=∠2,(已知)
∴ .( )
∴EF∥DB.( )
已知:如图,∠ABC+∠BGD=180°,∠1=∠2.
求证:EF∥DB.
证明:∵∠ABC+∠BGD=180°,(已知)
∴ .( )
∴∠1=∠3.( )
又∵∠1=∠2,(已知)
∴ .( )
∴EF∥DB.( )
![](https://img.xkw.com/dksih/QBM/2019/6/9/2222141211992064/2223304685879296/STEM/94658aa50b2b4ae9af23a4e92017324e.png?resizew=150)
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解答题-问答题
|
较易
(0.85)
【推荐2】如图,
,
是直线
,
之间的一条折线.探究
,
,
,
之间满足怎样的数量关系,试说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9caed59249d80fc569f789d916ae2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b5c16dc0a6049b55c9949fca02a82d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecd5c0de3f9a56ee0e628487548437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3a0ba30edf07eb131a674d959317d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a09d2d1b9b9d4562d74196cef3e3ca.png)
您最近一年使用:0次