在平面直角坐标系中,点
的坐标为
,点
的坐标为
,
为平面直角坐标系内一点,
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dbd9ed5ae3f4e17fd82617d80d1a09f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc8350b12974ffc8d06fce36d158f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3b5fe7ff4823684bcbd303eb74833a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6e4a2df58a236c20df5df0d29a466c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
A.14 | B.![]() | C.![]() | D.![]() ![]() |
21-22八年级下·广东广州·期中 查看更多[3]
广东省广州市华南理工大学附属中学、暨南大学附中、华颖中学、南国中学2021-2022学年八年级下学期期中考试数学试卷河南省省直辖县级行政单位济源市2021-2022学年八年级上学期期末数学试题(已下线)难点特训(四)选填压轴50道-【微专题】2022-2023学年八年级数学下册常考点微专题提分精练(人教版)
更新时间:2022-06-17 15:11:32
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【推荐1】如图,在平面直角坐标系中,点
的坐标为
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的坐标为
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【推荐2】在平面直角坐标系中,将等腰直角三角形
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【推荐1】在△ABC中,CD平分∠BCA,与AB交于点D.若BD=3,AD=4,∠A=30°,△ABC中BC边上的高为( )
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【推荐2】如图,四边形ABCD、EFGH、NHMC都是正方形,边长分别为a,b,c;A,B,N,E,F五点在同一直线上,则c=( )
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