如图,已知
,求证:
.
阅读下面的解答过程,填空并填写理由.
(已知),
_______(_______________________).
(______________________).
(已知),
(______________).
________(____________________).
_________( ______________________).
又
(已知),
.
(___________________).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ec078f5fe26b2400e4bf94c302c65a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5afd58cf78512bc596645d2d5a1643fe.png)
阅读下面的解答过程,填空并填写理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a70e9c4cb2d1ff1c4981153ba6e47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e80f2ee671940f50f23756bfbb2de58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d98228bd5ecb89ef69c62a71f8e1ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c08980b6afedc04aa04f385791f0163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/758dc5363d5b601cd457da948795f951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c967e7af3b61f340357398030cd5e739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3747ac8724daa6e8be08b07aeee19864.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da2dfbb92443ab14a4b8a8138601644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce5091e26a032983026905fd4bc88df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcfbe71b562e539a95b31f90ad5526e0.png)
更新时间:2024-04-02 17:26:36
|
【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】完成下面的证明:
如图,
.求证:
.
,
∴
( ① ).
又∵
( ② ),
,
,
∴
③ (等量代换).
∴
( ④ ).
∴
( ⑤ ).
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1ecc1bacb93db00df788a584efea74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279843ac0d30e2f1c5a249e718db723e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edf6f60fa9f6f6a56bd3a48a1e1eeaf.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e656bb343181eef14d4297b84af5dd.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ed5fa03b280bf7a42ceb9b7adf2187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0f86566770c9a240ebef8bd232cc9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba02910a01689f636c71116e96dfdf33.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b83764876be47a196fd5f408763738a.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e932b4add3175358f15be0e1f7104e79.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279843ac0d30e2f1c5a249e718db723e.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】已知:如图,AD∥BE,∠A=∠E,
(1)求证:∠1=∠2;
(2)若DC平分∠ADE,直接写出图中所有与∠1相等的角.
(1)求证:∠1=∠2;
(2)若DC平分∠ADE,直接写出图中所有与∠1相等的角.
![](https://img.xkw.com/dksih/QBM/2020/3/24/2426382182924288/2427216716120064/STEM/03c0f59ee7784a4ead0da6b6a17c5894.png?resizew=191)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
名校
【推荐3】完成下列推理过程:
如图,已知∠A=∠EDF,∠C=∠F,求证:BC∥EF
![](https://img.xkw.com/dksih/QBM/2018/5/5/1938553596936192/1939425973501952/STEM/22efbfb1-2ec7-4bfa-9754-cfd153b4b6b9.png?resizew=173)
证明:∵∠A=∠EDF(已知)
∴________∥________(__________________________________)
∴∠C=________(_____________________________________)
又∵∠C=∠F(已知)
∴_______=∠F(等量代换)
∴________∥________(_________________________________)
如图,已知∠A=∠EDF,∠C=∠F,求证:BC∥EF
![](https://img.xkw.com/dksih/QBM/2018/5/5/1938553596936192/1939425973501952/STEM/22efbfb1-2ec7-4bfa-9754-cfd153b4b6b9.png?resizew=173)
证明:∵∠A=∠EDF(已知)
∴________∥________(__________________________________)
∴∠C=________(_____________________________________)
又∵∠C=∠F(已知)
∴_______=∠F(等量代换)
∴________∥________(_________________________________)
您最近一年使用:0次