已知线段
,用直尺和圆规作线段
的垂直平分线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
22-23八年级上·全国·课后作业 查看更多[2]
更新时间:2022-11-29 06:37:22
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【知识点】 线段垂直平分线的性质解读
相似题推荐
解答题-证明题
|
较易
(0.85)
【推荐1】如图,在
中,
边的垂直平分线
与
的平分线交于点E,
交
的延长线于点F,
交
于点G.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/d03ef843-0e07-4bec-b718-84435532c1b6.png?resizew=170)
(1)求证:
;
(2)若
,
,且
,试问线段AF的长度是否为定值?如果是,请求出这个定值;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827beb23a9fe02a8b588645bcb82ce67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/d03ef843-0e07-4bec-b718-84435532c1b6.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb65161f9508867ed7847606781fa7e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722c896a294ef601785b2b017611bbee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f23ab837a0ce9a68427927d2ed5674.png)
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解答题-作图题
|
较易
(0.85)
名校
【推荐2】如图,已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/4088034a-d046-4c92-b7cc-9407fa5c99ec.png?resizew=166)
(1)作
的平分线,交边
于点D;作
的垂直平分线,交
于点E交
于点F,连接
;(要求:尺规作图,不写作法,保留作图痕迹)
(2)在(1)所作的图中,连接
.如果
,猜想并说明
与
存在的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/4088034a-d046-4c92-b7cc-9407fa5c99ec.png?resizew=166)
(1)作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)在(1)所作的图中,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8182e8ed3ee96372ee39a77faea9b0d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd94dd51562ecbee6edd4265326b765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384da7acfefa7c656eaca2df173f0cb6.png)
您最近一年使用:0次