请你写出两个本考卷中没有的定义
19-20八年级上·山东·课后作业 查看更多[1]
(已下线)5.1 定义与证明(同步测试)-2018-2019学年八年级上学期数学教材(青岛版)
更新时间:2018-10-07 11:33:45
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解答题-证明题
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容易
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【推荐1】如图,四边形
是矩形,
,交
的延长线于点
,
,交
的延长线于点
,连接
.
求证:四边形
是菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/684d328b02462aa25a936d1c83eee4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4ed367926376b17f6bef079644ea79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1507da3daed983c2f355d4caebb66d72.png)
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