1 . 如图1,在线段AB上有一点E,若
=
,则我们称E为AB的黄金分割点.如图2,正方形PQMN的边PQ上有一点O,连接ON,延长OP至点G,使得OG=ON,以PG为边在正方形PQMN的上方作正方形PGKH,若PQ=4,H是PN的黄金分割点,过点O作OI⊥ON交QM于点I,则S△NOI的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f276ad76c075f4be32ad326d223cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a2a3ca97740b27193a7289833819ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/22/6ad3b631-5cc7-4231-9758-f8aa51c8d928.png?resizew=271)
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2卷引用:河南省2020-2021学年九年级上学期期中数学试题
2 . 如图,直角坐标系中,点
是
轴正半轴上的一个动点,过点
作
轴的平行线,分别与直线
、直线
交于
两点以
为边向右侧作正方形
.当点
在正方形
内部时,
的取值范围是_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b119d0cf10a948cdc53c1066af0b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2卷引用:吉林省松原市前郭县2019-2020学年八年级下学期期末考试数学试题
名校
3 . 如图,Rt△ABO中,∠ABO=90°,AB=4,BO=2.以AB为边作正方形ABCD.点M是边BC上一动点,连接AM,过O作AM的垂线,垂足为N,连接CN.则线段CN的最小值是__ .
![](https://img.xkw.com/dksih/QBM/2021/4/24/2706920441241600/2706957006045184/STEM/bee76ac0721f449090eb1d97201db322.png?resizew=160)
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10卷引用:陕西西安碑林区西安交通大学附属中学2019~2020学年九年级上学期期末数学试题
陕西西安碑林区西安交通大学附属中学2019~2020学年九年级上学期期末数学试题2021年陕西省中考数学摸底试题2021年陕西省初中学业水平摸底考试数学试题(已下线)陕西卷06-2021年《三步冲刺中考·数学》(陕西专用)之第3步中考热身卷(已下线)2.圆的性质(题型篇)(已下线)【万唯原创】2021年陕西省面对面-讲册-专题十三类型5(已下线)【万唯原创】2021年山西专项集训-选填专项训练 题型二十一广东省梅州市丰顺县东海中学2022-2023学年九年级上学期11月月考数学试卷(已下线)专题12 直角对直径之隐圆问题-【微专题】2022-2023学年九年级数学上册常考点微专题提分精练(苏科版)(已下线)专题13 直角对直径之隐圆问题-【微专题】2022-2023学年九年级数学上册常考点微专题提分精练(浙教版)
4 . 在平行四边形、矩形、菱形、正方形四种图形中,绕着其对角线的交点旋转90度,能够和原图形完全重合的有_____ 种.
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5 . 如图,在平面直角坐标系中,已知正方形ABCD的边长为8,与y轴交于点M(0,5),顶点C(6,﹣3),将一条长为2020个单位长度且没有弹性的细绳一端固定在点M处,从点M出发将细绳紧绕在正方形ABCD的边上,则细绳的另一端到达的位置点N的坐标为_____ .
![](https://img.xkw.com/dksih/QBM/2021/3/14/2677913779085312/2682725397700608/STEM/66772917a5c14aec9aa5f03f3ff2fa5a.png?resizew=189)
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名校
6 . 如图,在正方形
中,对角线
、
交于点
,点
在
的延长线上,
交
于点
,连接
.
的角平分线与
交于点
,连接
.过点
分别作
于点
、
于点
,连接PQ
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e80bb0f244f283cd4c3faf809ba488d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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![](https://img.xkw.com/dksih/QBM/2021/2/2/2649630680334336/2681799369056256/STEM/3e043df1-0ec5-498d-b425-f17b5a7ad4b8.png?resizew=217)
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7 . 如图,在平面直角坐标系中,点A从点
出发向原点O匀速运动,与此同时点B从点
出发,在x轴正半轴上以相同的速度向右运动,当点A到达终点O时,两点同时停止运动.连接
,以线段
为边在第一象限内作正方形
,则正方形
面积的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b43013cc3fc1f19fa3f9d3d714d8bd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc46f09a8c079e2916af98bb2f96f84.png)
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5卷引用:江苏省苏州市2020年九年级上学期期末考试数学试题
江苏省苏州市2020年九年级上学期期末考试数学试题(已下线)期末检测卷(难)-2021-2022学年苏科版九年级数学上册同步单元检测(已下线)专题22.12 二次函数y=a(x-h)2+k(a≠0)的图象与性质(巩固篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(人教版)(已下线)专题2.15 二次函数y=a(x-h)2+k(a≠0)的图象与性质(巩固篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(北师大版)(已下线)专题5.15 二次函数y=a(x-h)2+k(a≠0)的图象与性质(巩固篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(苏科版)
名校
8 . 在平面直角坐标系中,正方形ABCD的位置如图所示,点A的坐标为
,点D的坐标为
,延长CB交x轴于点
,作正方形
,延长
交x轴于点
,作正方形
按这样的规律进行下去,第2020个正方形的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
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![](https://img.xkw.com/dksih/QBM/2021/1/11/2633676503334912/2636813572980736/STEM/aaa54e1de75e41569545ccee28cf769d.png?resizew=254)
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6卷引用:2020年广东省珠海市紫荆中学九年级中考模拟数学试题
9 . 如图,正方形ABCD的两个顶点A,B分别在x轴,y轴上,对角线相交于点E,
.若反比例函数
的图象经过D,E两点,则k的值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04725e51b4870658f74de79403e3898f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03517310ea1e913f709753592ac65ffd.png)
![](https://img.xkw.com/dksih/QBM/2020/12/23/2620407028465664/2623826345246720/STEM/5eb9b195-1297-4965-9829-e794a02da887.png?resizew=234)
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10 . 在平面直角坐标系中,直线
与
轴交于点
,如图所示依次作正方形
、正方形
、…、正方形
,使得点
在直线
上,点
在
轴正半轴上,则点
的坐标是__________ ,点
的坐标是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db0a1cbf7b0ed76c443b953af8734d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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