1 . 数学实践课上,老师组织同学们开展以“图形的旋转”为主题的探究活动,已知
为等腰直角三角形,过点A的直线
,射线
绕点B旋转交
于点M,过点M作
,交直线
于点N,探究线段
和
有怎样的数量关系?
(1)特例初探:
如图1,当
时,点N与点A重合,猜想线段
和
间的数量关系,并证明你的结论;
如图2所示,当
与
不垂直时,(1)的结论是否仍然成立?请猜想并证明你的结论;
已知:
中,
,过点O,E分别作
,
,垂足分别为O,E,
与
交于点F,连接
,若
,
.
求:
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8096b3edbcf010b6226a227351c1b586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(1)特例初探:
如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb350b8e577a7b6712031a3b5b98309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
如图2所示,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b98bec817e96fba365ba496ad3b9af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85bfcd8c4f3e46aa879f335bedf40943.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef49154c5eef60312e376cf390e4e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1916638cf7373c23589915b68be6da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d727725fb5f6f8f2aedcd1af76c6c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf11eb5162fcc5e0e469d103e1e6dd4.png)
求:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc869125145c0139d92490a41bd3918.png)
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2 . 综合与实践:
数学模型可以用来解决一类问题,是数学应用的基本途径.通过探究图形的变化规律,再结合其他数学知识的内在联系,最终可以获得宝贵的数学经验,并将其运用到更广阔的数学天地.
如图1,在
和
中,
,
,
,连接
,
,延长BE交
于点D.则
与
的数量关系: ,
.
(2)类比探究:
如图2,
和
均为等腰直角三角形,
,连接
,
,且点B,E,F在一条直线上,过点A作
,垂足为点M.请猜想
,
,
之间的数量关系,并说明理由;
(3)实践应用:
如图3,正方形
中,
,M点为线段
中点.将正方形
绕点A顺时针旋转,形成正方形
.连接
、
,直线
交直线
于点P,则线段
最大值为 .
数学模型可以用来解决一类问题,是数学应用的基本途径.通过探究图形的变化规律,再结合其他数学知识的内在联系,最终可以获得宝贵的数学经验,并将其运用到更广阔的数学天地.
如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38d97f03faed3152db2fd3bd1919944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d0dd547921b8a35acf7b407fac21b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b5c0e0724cce5c25a88dca5e9220c2.png)
(2)类比探究:
如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a93128719573a60a1bdcf0ede1116b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396632dba26d326a6b69f0bb7016bd14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
(3)实践应用:
如图3,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdd511e3eb724a9add64021b9b6f8c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
您最近一年使用:0次
3 . 【特例感知】如图
,点
是正方形
对角线
上一点,
于点
,
于点
.
(1)求证:四边形
是正方形;
(2)
= ;
【规律探究】将正方形
绕点
旋转得到图
,连接
,
,
.
(3)
的比值是否会发生变化?说明理由;
【拓展应用】如图
,在图
的基础上,点
,
,
分别是
,
,
的中点;
(4)四边形
是否是正方形?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d117223dabd894982f5068cdfbd4ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5aeb2b72c0521ae23b85adb7d8df373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680a05caf4821c1e73bc9b232e0d5964.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f6cf1c89967eca1406e75b2eda45c7.png)
【规律探究】将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad194a7c911eef46cf9a07eb4d6096f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f6cf1c89967eca1406e75b2eda45c7.png)
【拓展应用】如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
(4)四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840d13902f0fd194dc6e081e883a408b.png)
您最近一年使用:0次
真题
4 . 问题情境:小红同学在学习了正方形的知识后,进一步进行以下探究活动:在正方形
的边
上任意取一点G,以
为边长向外作正方形
,将正方形
绕点B顺时针旋转.
(1)当
在
上时,连接
相交于点P,小红发现点P恰为
的中点,如图①.针对小红发现的结论,请给出证明;
(2)小红继续连接
,并延长与
相交,发现交点恰好也是
中点P,如图②,根据小红发现的结论,请判断
的形状,并说明理由;
规律探究:
(3)如图③,将正方形
绕点B顺时针旋转
,连接
,点P是
中点,连接
,
,
,
的形状是否发生改变?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac49d8955b114d079bb2f7e9d9b4d9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)小红继续连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
规律探究:
(3)如图③,将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
您最近一年使用:0次
2023-06-29更新
|
1782次组卷
|
13卷引用:专题9.44 中心对称图形——平行四边形(直通中考)(培优练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(苏科版)
(已下线)专题9.44 中心对称图形——平行四边形(直通中考)(培优练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(苏科版)山东省威海市威海经济技术开发区2023-2024学年八年级下学期5月期中数学试题2023年湖南省湘潭市中考数学真题(已下线)第23单元03巩固练(已下线)专题1.11 正方形的性质与判定(直通中考)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)(已下线)XDRzkgssxzw9103(已下线)专题23.17 旋转(直通中考)(全章培优练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题31 几何综合压轴题(共23道)-学易金卷:2023年中考数学真题分项汇编(全国通用)辽宁省鞍山市岫岩满族自治县石灰窑镇中学2023-2024学年九年级上学期12月月考数学试题(已下线)专题16 矩形、菱形、正方形-学易金卷:三年(2021-2023)中考数学真题分项汇编(湖南专用)(已下线)第5讲 探究题(已下线)专题11 四边形压轴题综合-2024年中考数学二轮热点题型归纳与变式演练(全国通用)2024年甘肃省定西市安定区公园路中学下学期二模数学试题
名校
5 . 【探索发现】
“旋转”是一种重要的图形变换,图形旋转过程中蕴含着众多数学规律,以图形旋转为依托构建的解题方法是解决几何问题的常用方法.如图1,在正方形
中,点
在
上,点
在
上,
.
某同学进行如下探索:
第一步:将
绕点
顺时针旋转90°,得到
,且
、
、
三点共线;
第二步:证明
≌
;
第三步:得到
和
的大小关系,以及
、
、
之间的数量关系.
请完成第二步的证明,并写出第三步的结论.
【问题解决】
如图2,在正方形
中,点
在
上,且不与
、
重合,将
绕点
顺时针旋转,旋转角度小于90°,得到
,当
、
、
三点共线时,这三点所在直线与
交于点
,要求使用无刻度的直尺与圆规找到
点位置,某同学做法如下:连接
,与
交于点
,以
为圆心,
为半径画圆弧,与
相交于一点,该点即为所求的点
.
请证明该同学的做法.(前面【探索发现】中的结论可直接使用,无需再次证明)
【拓展运用】
如图3,在边长为2的正方形
中,点
在
上,
与
交于点
,过点
作
的垂线,交
于点
,交
于点
,设
(
),
,直接写出
关于
的函数表达式:_______________.
“旋转”是一种重要的图形变换,图形旋转过程中蕴含着众多数学规律,以图形旋转为依托构建的解题方法是解决几何问题的常用方法.如图1,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83910639ac9ea98d4980fd0820178d7.png)
某同学进行如下探索:
第一步:将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d178d1a6ab4178996033cf1ca0c244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
第二步:证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19697acb629aed98c7733bcffd56fd0d.png)
第三步:得到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a55a1a244f81097e05e715b69580faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b9ca5dba780317ac0aa0b8878209ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
请完成第二步的证明,并写出第三步的结论.
【问题解决】
如图2,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72877c13ed193e20096b533378d9c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
请证明该同学的做法.(前面【探索发现】中的结论可直接使用,无需再次证明)
【拓展运用】
如图3,在边长为2的正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cae598854b1d6fa4c7497b8b3308f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211ebd58d457c6e7855cef475a91f203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7345fa725bf0e1b7d1fa443d8d1b115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/13/69460c9d-38a1-4eef-a984-c5f87a4d0aaf.png?resizew=657)
您最近一年使用:0次
6 . 如图,正方形ABCD的对角线相交于点O,点O也是正方形A′B′C′O的一个顶点,如果两个正方形的边长都等于1,那么正方形A′B′C′O绕顶点O转动,两个正方形重叠部分的面积大小有什么规律?请说明理由.
![](https://img.xkw.com/dksih/QBM/2019/2/18/2143355108179968/2144938063790080/STEM/a4cc1ea711f8485aa31b035efac2eee5.png?resizew=97)
您最近一年使用:0次
7 . 如图,点O(0,0),A(0,1)是正方形OAA1B的两个顶点,以OA1对角线为边作正方形OA1A2B1,再以正方形的对角线OA2作正方形OA2A3B2,…,依此规律,则点A2017的坐标是( )
![](https://img.xkw.com/dksih/QBM/2019/3/12/2158808690106368/2159845167587331/STEM/068f1ca386af4aa9ae5d5be4ea76069e.png?resizew=192)
![](https://img.xkw.com/dksih/QBM/2019/3/12/2158808690106368/2159845167587331/STEM/068f1ca386af4aa9ae5d5be4ea76069e.png?resizew=192)
A.(0,21008) | B.(21008,21008) | C.(21009,0) | D.(21009,-21009) |
您最近一年使用:0次
2017-07-01更新
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3193次组卷
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10卷引用:天津市和平区 汇文中学 2018年 八年级数学下册 平行四边形 单元突破卷
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