已知:在直角坐标系中,点
,点
,点
在第二象限,
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3c9cc823b331f0c211c1541d9bdb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37df9dad3961893b22d6639c4311e267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ca33bd14fffd3ccaa6e9af1b9d64758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2020/12/8/2609789255778304/2609898591502336/STEM/cc4cfb6f-8167-414c-9af4-8b9f8de1ada7.png?resizew=182)
20-21八年级上·江西南昌·期中 查看更多[1]
(已下线)【南昌新东方】2020年-11月-江西南昌-三中-初二-第一学期-期中-数学-试卷 8
更新时间:2020-12-08 19:15:11
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解答题-问答题
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适中
(0.65)
【推荐1】如图,DB是△ABC的高,AE是角平分线,∠BAE=26°,求∠BFE的度数.
![](https://img.xkw.com/dksih/QBM/2020/9/30/2560847736340480/2565751100489728/STEM/e6a105372e6441faae828bf3ef7e2737.png?resizew=177)
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解答题-证明题
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适中
(0.65)
【推荐2】如图,在
中,
,
平分
,
于点D.
,
,求
的度数.
(2)探究
、
、
的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6f337c00a6d4bf1e7580d8888db3d6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76ffd241623ec4ee9fd08876464def3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e37b078d02601f76f0f8320b410809f.png)
(2)探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e37b078d02601f76f0f8320b410809f.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】在正方形ABCD中,已知∠MAN=45°,AH⊥MN,垂足为H,若M、N分别在边CB、DC的延长线上移动.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/64164d90-a482-4b5f-a186-a43231cbc9ca.png?resizew=189)
①试探究线段MN、BM、DN之间的数量关系.
②求证:AB=AH.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/64164d90-a482-4b5f-a186-a43231cbc9ca.png?resizew=189)
①试探究线段MN、BM、DN之间的数量关系.
②求证:AB=AH.
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