如图,正方形
中,点E、F分别在
上,
是等边三角形,连接
交
于G,下列结论:①
,②
,③
垂直平分
,④
,其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/690b6503-f13e-4f2b-bc6d-a398e17aae0e.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20cb2c77ea29b6eabbc477bc3743859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3c13d921d69e148a91ff7a46f657ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a3bec28b97f9688583594adb6d8cf4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/690b6503-f13e-4f2b-bc6d-a398e17aae0e.png?resizew=146)
A.1个 | B.2个 | C.3个 | D.4个 |
18-19八年级下·天津·单元测试 查看更多[9]
人教版八年级数学下册 第十八章 平行 四边形 单元测试卷福建省漳州市漳州市玉兰学校2019-2020学年九年级上学期期中数学试题(已下线)专题1.3 正方形的性质与判定(知识解读)-2022-2023学年九年级数学上册《同步考点解读·专题训练》(北师大版)广东省汕头市潮南实验学校2021-2022学年下学期八年级数学试卷 2022年浙江省杭州市名校中考数学模拟试卷湖南省常德市桃源县2022-2023学年八年级下学期期中数学试题山东省乐陵市王集中学2022-2023学年八年级下学期第二次月考数学试题2022年陕西省西安市高新区逸翠园学校中考模拟数学试题陕西省西安市曲江第二中学2023-2024学年九年级上学期期中数学试题
更新时间:2022-09-30 23:44:02
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【推荐1】如图①,在正方形ABCD中,点E是AB的中点,点P是对角线AC上一动点,设PC=x,PE+PB=y,图②是y关于x的函数图象,且图象上最低点Q的坐标可能是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/a3a04cda-c2c8-4574-af8a-624292e1e002.png?resizew=306)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/a3a04cda-c2c8-4574-af8a-624292e1e002.png?resizew=306)
A.(![]() ![]() | B.(2![]() ![]() | C.(4,3) | D.(4![]() ![]() |
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【推荐2】已知:如图,在正方形ABCD外取一点E,连接AE,BE,DE,过点A作AE的垂线交DE于点P.若AE=AP=1,PB=
.下列结论:①△APD≌△AEB;②点B到直线AE的距离为
;③EB⊥ED;④S△APD+S△APB=1+
.其中正确结论的序号是( )
![](https://img.xkw.com/dksih/QBM/2018/9/21/2037246419623936/2045096818253824/STEM/feebae4b09b143fca3758c839e776c24.png?resizew=122)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://img.xkw.com/dksih/QBM/2018/9/21/2037246419623936/2045096818253824/STEM/feebae4b09b143fca3758c839e776c24.png?resizew=122)
A.①②③ | B.①②④ | C.②③④ | D.①③④ |
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【推荐1】如图,C为线段
上一动点(不与点A、E重合),在
同侧分别作正
和正
,
与
交于点O,
与
交于点P,
与
交于点Q,连接
.以下五个结论:①
;②
;③
;④连接
,
平分
;⑤
.恒成立的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/fd9374df-9b48-4bed-b2ed-6516cb4e5208.png?resizew=229)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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A.①⑤ | B.①②⑤ | C.①②③⑤ | D.①②③④⑤ |
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【推荐2】如图,在Rt△ABC中,∠ACB=90°,
将△ABC绕点A逆时针旋转60°,得到△ADE,连接BE,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/11/80931441-b130-41b5-b323-4776c92a623d.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bc7774144c164f7ebaeca54fa657e9.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,矩形
中,
,对角线相交于
,过
点作
交
于
点,
为
中点,连接
交
于
点,交
的延长线于
点,下列
个结论:
;
;
≌
;
;
.正确的有( )个.
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A.2 | B.3 | C.4 | D.5 |
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【推荐2】如图,已知等边
的边长为4,点D,E分别在边
,
上,
.以
为边向右作等边
,则
的最小值为( )
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A.4 | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,正方形ABCD中,AB=6,E为AB的中点,将△ADE沿DE翻折得到△FDE,延长EF交BC于G, FH⊥BC,垂足为H,连接BF、DG.以下结论:①BF∥ED; ②△DFG ≌△DCG;③△FHB∽△EAD;④tan∠GEB=
;⑤S△BFG=2.4.其中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/05fce304-3660-4fe4-a1f5-3e5a2b8783e4.png?resizew=98)
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A.2 | B.3 | C.4 | D.5 |
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【推荐2】如图,在正方形ABCD中,点E是边BC的中点,连接AE、DE,分别交BD、AC于点P、Q,过点P作
交CB的延长线于F.下列结论:①
;②
;③
;④若四边形OPEQ的面积为4,则该正方形ABCD的面积为36;⑤
.其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992746116136960/2994664549908480/STEM/53359fd6-ca49-4722-a0da-b0fb2f704f67.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c66902c5f7d00de2e4ba9ccfcfd759.png)
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![](https://img.xkw.com/dksih/QBM/2022/6/2/2992746116136960/2994664549908480/STEM/53359fd6-ca49-4722-a0da-b0fb2f704f67.png?resizew=163)
A.①②③④ | B.①③④⑤ | C.①②④⑤ | D.①②③⑤ |
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