如图,在矩形
中,过点
作对角线
的垂线并延长,与
的延长线交于点
,与
交于点
,垂足为点
,连接
,且
,则下列结论正确的有( )个:①
;②
;③
;④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29266ec75d708b4f01da21602a6f9835.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/f7dd5104-8ffe-410c-8593-ad565b45af0a.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becb00e0bd65d2fe3cc6b4869c093aae.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6707d7900d48172ac16e600b209906f0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29266ec75d708b4f01da21602a6f9835.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/f7dd5104-8ffe-410c-8593-ad565b45af0a.png?resizew=170)
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22-23九年级上·广东深圳·期末 查看更多[3]
广东省深圳市南山区2022-2023学年九年级上学期期末考试数学试卷广东省广州市第七十五中学2023-2024学年九年级上学期期末数学试题(已下线)期末模拟测试卷02-2023-2024学年九年级数学上学期期末考点大串讲(北师大版)
更新时间:2022-12-28 21:35:12
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【推荐1】如图,正方形
的边长为a,点E在边
上运动(不与点A,B重合),
,点F在射线
上,且
与
相交于点G,连接
.则下列结论:①
,②
的周长为
,③
;④当
时,G是线段
的中点,其中正确的结论是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/00858f45-e814-4433-98a4-2194cf724650.png?resizew=126)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586fccde0270c4365fbe2a14c640d523.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4efd3b913e466f2c14f7952123064c9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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A.①②③ | B.①④ | C.①③④ | D.①②③④ |
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【推荐2】如图,在
中,以
为腰作等腰直角三角形
和等腰直角三角形
,连接
为
边上的高线,延长
交
于点
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;②
;③
;④
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【推荐1】如图,边长为1的正六边形
放置于平面直角坐标系中,边
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【推荐2】如图1所示,正方形
中,点E是边的中点,动点P从点A出发,在正方形的边上沿A→B→E的路线匀速运动到点E停止,设点P的运动路程为x,
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【推荐1】如图,在矩形
中,
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,
的面积依次为
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,
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的值为( )
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【推荐2】如图,矩形ABCD中,E为边AD上一点(不为端点),EF⊥AD交AC于点F,要求△FBC的面积,只需知道下列哪个三角形的面积即可( )
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【推荐1】如图,在矩形
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分别是边
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的中点,某一时刻,动点
从点
出发,沿
方向以每秒2个单位长度的速度向点
匀速运动;同时,动点
从点
出发,沿
方向以每秒1个单位长度的速度向点
匀速运动,其中一点运动到矩形顶点时,两点同时停止运动,连接
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【推荐2】如图,在平面直角坐标系中,
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