如图,直线
,将含有
角的三角板
的直角顶点C放在直线
上,则
的和是多少度?并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b51870b823df847741bd7a3e37b639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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22-23七年级下·山东青岛·期末 查看更多[2]
山东省青岛市青岛高新技术产业开发区青岛实验学校2023-2024学年七年级下学期期末数学试题(已下线)清单01 平面图形的认识(二)全章复习(2个考点梳理+12种题型解读)-2023-2024学年七年级数学下学期期末考点大串讲(苏科版)
更新时间:2024-01-09 21:30:51
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解答题-问答题
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【推荐1】如图所示,AD∥BC,E为AB上任一点.
![](https://img.xkw.com/dksih/QBM/2015/6/29/1573855661064192/1573855667290112/STEM/cd058930822c49b48fc6a86fbb66d7cc.png)
(1)过点E作EF∥AD,交DC于点F.
(2)EF与BC之间有什么样的位置关系,为什么?
![](https://img.xkw.com/dksih/QBM/2015/6/29/1573855661064192/1573855667290112/STEM/cd058930822c49b48fc6a86fbb66d7cc.png)
(1)过点E作EF∥AD,交DC于点F.
(2)EF与BC之间有什么样的位置关系,为什么?
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【推荐2】如图,已知∠1=∠2,∠3+∠4=180°,请说明AB//EF的理由.
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解答题-证明题
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【推荐1】如图,
和
中,
,点
、
、
、
在同一直线上,有如下三个关系式:①
:②
;③
.请用其中两个关系式作为条件,另一个作为结论,写出1个你认为正确的命题.(用序号写出命题书写形式,如:如果①、②,那么③
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解答题-作图题
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【推荐2】如图,
是平行四边形
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