1 . 如图,正方形ABCD的边长是8,点E、F分别是边AB、BC上的点,且
,若点P是对角线AC上一个动点,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6cdf1dd2efb03e3663452c46a4532f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc28533be6bacfff4c46cc792603247d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/6535d5a2-7745-40e3-82fe-9b0b2ea49213.png?resizew=158)
您最近一年使用:0次
2022-08-09更新
|
213次组卷
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3卷引用:江苏省常州市金坛区2021-2022学年八年级下学期期中数学试题
江苏省常州市金坛区2021-2022学年八年级下学期期中数学试题(已下线)专题09 正方形中的最值-【微专题】2022-2023学年八年级数学下册常考点微专题提分精练(苏科版)陕西省西安市长安区航天城第二中学2023-2024学年九年级下学期月考数学试题
2 . 如图,在
中,E、F分别为边AB、CD的中点,BD是对角线,过A点作
交CB的延长线于点G.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/b573864c-607a-4e3f-ab24-da950d5bc7b0.png?resizew=575)
(1)求证:
;
(2)当
满足什么条件时,四边形DEBF是菱形(不需要证明)
(3)请利用备用图分析,在(2)的条件下,若
,
,点M为BF的中点,当点P在BD边上运动时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54efc4116b6cb296d55892a21e0d797f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbad7c0ef1061ac659ab8164b5e25226.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/b573864c-607a-4e3f-ab24-da950d5bc7b0.png?resizew=575)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad93bdc4f5a8ac154d8084080ccf1d82.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
(3)请利用备用图分析,在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77cb949c3ad51102387b8fc3c01b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b0356ac5f36c640394e33b97f6e758.png)
您最近一年使用:0次
真题
名校
3 . 如图,矩形
中,
,点E在折线
上运动,将
绕点A顺时针旋转得到
,旋转角等于
,连接
.
上时,作
,垂足为M,求证
;
(2)当
时,求
的长;
(3)连接
,点E从点B运动到点D的过程中,试探究
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a0ecba7e1969a265ff75bcb17ed9d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790d5327d89fc1b3145e546482a46a6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4714e33baa77ada39336c475a4be1cbe.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bbd04b75eb3db55fc13d78e7c30188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
您最近一年使用:0次
2022-08-04更新
|
2714次组卷
|
11卷引用:2022年江苏省南通市中考数学真题
2022年江苏省南通市中考数学真题(已下线)专题20 图形平移、旋转,投影与视图-三年(2020-2022)中考数学真题分项汇编(江苏专用)(已下线)专题21 图形的相似-三年(2020-2022)中考数学真题分项汇编(江苏专用)广东省茂名市第一中学2022-2023学年九年级上学期期中考试数学试卷(1-4班)江苏省无锡市江阴市璜塘中学、峭岐中学等三校2022-2023学年九年级下学期3月月考数学试题(已下线)黄金卷2-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(抚本铁辽葫专用)2023年广东省广州市海珠区绿翠现代实验学校中考二模数学试题(已下线)2023年广州等市二模(几何综合)2024年福建省龙岩市长汀县中考一模数学试题(已下线)查补培优冲刺01 三角形与四边形综合压轴-【查漏补缺】2024年中考数学复习冲刺过关(江苏专用)2024年广东省东莞中学中考三模数学试题
4 . 如图,在正方形
中,
,
与
交于点O,N是
的中点,点M在
边上,且
,P为对角线
上一点,则
的最大值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d527d4795ece4a5756d1cf8dba31e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb909eaf6572dc2a0cac7557cb91d2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113d5b680929a91e84df28d6bf058545.png)
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5 . 如图,菱形ABCD周长为16,∠DAC=30°,E是AB的中点,P是对角线AC上的一个动点,则PE+PB的最小值是 _____ .
您最近一年使用:0次
2022-07-25更新
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320次组卷
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4卷引用:广东省东莞市松山湖莞美学校2021-2022学年八年级下学期期中数学试题
6 . 【教材呈现】如图是华师九年级上删数学教材第77页的部分内容.
【定理证明】
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/23/e718ee91-2a10-47b7-8118-6926068eecd6.png?resizew=550)
(1)请根据材料内容,结合图①,写出证明过程.
【定理应用】
(2)如图②,四边形
中,
、
、
分别为
、
、
的中点,边
、
延长线交于点
,
,则
的度数是__________.
(3)如图③,矩形
中,
,
,点
在边
上,且
.将线段
绕点
旋转一周,得到线段
,
是线段
的中点,直接写出旋转过程中线段
长的最大值和最小值.
如图, 在![]() ![]() ![]() ![]() ![]() ![]() ![]() 对此,我们可以用演绎推理给出证明. ![]() |
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/23/e718ee91-2a10-47b7-8118-6926068eecd6.png?resizew=550)
(1)请根据材料内容,结合图①,写出证明过程.
【定理应用】
(2)如图②,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6414089941feb5d8a4a6a49566b9ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
(3)如图③,矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2e57629856cc8ed7ab28ca9ca76d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
您最近一年使用:0次
2022-07-20更新
|
239次组卷
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5卷引用:河南省新乡市卫辉市2021-2022学年九年级上学期期中数学试题
河南省新乡市卫辉市2021-2022学年九年级上学期期中数学试题河南省新乡市封丘县2021-2022学年九年级上学期期末数学试题贵州省铜仁市沿河土家族自治县2021-2022学年八年级下学期期中数学试题河南省南阳市淅川县2022-2023学年九年级上学期期中数学试题(已下线)第一次月考难点特训(二)与特殊平行四边形有关的压轴题-【微专题】2022-2023学年九年级数学上册常考点微专题提分精练(北师大版)
7 . 定义:对角线互相垂直的凸四边形叫做“准筝形”.如图 1,四边形
中,
,则四边形
是“准筝形”.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/1e51e40c-be39-471d-b860-a8d78be71a86.png?resizew=272)
(1)“三条边相等的准筝形是菱形”是 命题;(填“真”或“假”)
(2)如图1,在准筝形
中,
,
,
,求
的长;
(3)如图2,在准筝形
中,
与
交于点
,点
为线段
的中点,且
,
,在线段
上存在移动的线段
,点
在点
的左侧,且
,当四边形
周长最小时,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/1e51e40c-be39-471d-b860-a8d78be71a86.png?resizew=272)
(1)“三条边相等的准筝形是菱形”是 命题;(填“真”或“假”)
(2)如图1,在准筝形
![](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/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)如图2,在准筝形
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cd2bf7c88e24c91625e0f20ba2a4bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4901a7eda97d6a307db76c4fb196ba3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954fced28ebd8deff193f90fb41ac9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
您最近一年使用:0次
2022-07-19更新
|
364次组卷
|
2卷引用:湖南省长沙市2021-2022学年八年级下学期期末数学试题
8 . 如图,正方形
的对角线
,
相交于点
,点
是
上任意一点,
于点
,
于点
,若
,则
的长的最小值为( )
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016668435152896/3023626523058176/STEM/4d699ac5b7964786bea7cbfdda313fc0.png?resizew=122)
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d31767eb718a0327eca546fe6a189cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca0940f5c21431c089d4f7a221df43c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c14a66ed4bd66df65bc42c4ac1ed15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016668435152896/3023626523058176/STEM/4d699ac5b7964786bea7cbfdda313fc0.png?resizew=122)
A.2 | B.1 | C.![]() | D.![]() |
您最近一年使用:0次
2022-07-16更新
|
389次组卷
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4卷引用:重庆市潼南区2021-2022学年八年级下学期期末数学试题
重庆市潼南区2021-2022学年八年级下学期期末数学试题重庆地区2021-2022学年八年级下学期期末检测数学试题(已下线)专题09 正方形中的最值-【微专题】2022-2023学年八年级数学下册常考点微专题提分精练(苏科版)(已下线)(培优特训)专项9.6 特殊平行四边形中最小值问题-2022-2023学年八年级数学下册《同步考点解读·专题训练》(苏科版)
9 . 如图,在矩形ABCD中,AB=6,AD=20,点E在AD上且DE=4.点G在AE上且GE=8,点P为BC边上的一个动点,F为EP的中点,则GF+EF的最小值为____ .
![](https://img.xkw.com/dksih/QBM/2022/4/28/2967796582121472/3018038235881472/STEM/d09f337d5a964efe912a0f6adb2a5dad.png?resizew=205)
您最近一年使用:0次
10 . 如图,在正方形ABCD中,AB=9,点E在CD边上,且DE=2CE,点P是对角线AC上的一个动点,则PE+PD的最小值是_____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/e2759c2b-9c58-4006-8ad9-4878b15e3c57.png?resizew=116)
您最近一年使用:0次
2022-07-10更新
|
195次组卷
|
3卷引用:辽宁省营口市协作校2020-2021学年八年级下学期第三次质检数学试题