1 . 如图,菱形
中,
,
,
是
的中点,
是对角线
上的一个动点,则
的最小值是( )
![](https://img.xkw.com/dksih/QBM/2021/6/9/2739416669036544/2789024599646208/STEM/c11b90a4-933f-4542-8a19-720bb89d316f.png)
![](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/a9ba2098ed6b4137b08932524b72ba37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132bdd7393be8c517988c7706002bfa3.png)
![](https://img.xkw.com/dksih/QBM/2021/6/9/2739416669036544/2789024599646208/STEM/c11b90a4-933f-4542-8a19-720bb89d316f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 如图,在矩形ABCD中,AB=4,AD=6,E是AB边的中点,F是线段BC上的动点,将△BEF沿EF折叠,点B落在B'的位置,连接B'D,则B'D的最小值是( )
![](https://img.xkw.com/dksih/QBM/2021/5/9/2717107049095168/2792173164240896/STEM/40df12fe-3885-4d70-96f0-8e0483880167.png)
![](https://img.xkw.com/dksih/QBM/2021/5/9/2717107049095168/2792173164240896/STEM/40df12fe-3885-4d70-96f0-8e0483880167.png)
A.2![]() | B.6 | C.2![]() | D.4 |
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名校
3 . 如图,正方形
的边长为4,
为
边上一点,
AE=1.5,
为
边上一动点,连接
,以
为边向右作等腰直角
,
,连接
.当
取最小值时,
的长度是______ .
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1563ce496f108272863a8fcc9fdd1aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://img.xkw.com/dksih/QBM/2021/7/1/2754931380330496/2781691076206592/STEM/99b06f54f789418f8efe985c2b857b9a.png?resizew=208)
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4 . 如图,在边长为4的正方形ABCD中,E是AB边上的一 点,且AE=3,点Q为对角线AC上的动点,则△BEQ周长的最小值为( )
![](https://img.xkw.com/dksih/QBM/2021/5/17/2723067077509120/2789477986033664/STEM/8bc33547-f000-429f-858b-29d6176a131c.png)
![](https://img.xkw.com/dksih/QBM/2021/5/17/2723067077509120/2789477986033664/STEM/8bc33547-f000-429f-858b-29d6176a131c.png)
A.3 | B.4 | C.5 | D.6 |
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2021-08-19更新
|
162次组卷
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5卷引用:广西壮族自治区河池市南丹县2020-2021学年八年级下学期期中数学试题
广西壮族自治区河池市南丹县2020-2021学年八年级下学期期中数学试题广西壮族自治区贺州市钟山县2021-2022学年八年级下学期期末数学试题广西壮族自治区贺州市平桂区2021-2022学年八年级下学期期末数学试题山东枣庄薛城区五校联考2022-2023学年九年级上学期10月月考数学试题(已下线)专题02 特殊的平行四边形(十三大题型)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(山东专用)
5 . 如图,点
是正方形
边
上一点,
,
,点
是对角线
上的一动点,则
的最小值是______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4f3ab11a8b54cf29685b1f750cb130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead7f32d62cbeb160e8b60c57925e066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2062f2e8478e9f53bfeae4a69b45f7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/2021/8/2/2777637324300288/2786943570444288/STEM/86384974-da86-454c-abc4-0023532e8f35.png)
您最近一年使用:0次
6 . 如图,在平行四边形ABCD中,BC=AC,E、F分别是AB、CD的中点,连接CE、AF.
(1)求证:四边形AECF是矩形;
(2)当平行四边形ABCD的边或角满足什么关系时,四边形AECF是正方形?请说明理由.
(3)在(2)的条件下,若AE=4,点M为EC中点,当点P在线段AC上运动时,求PE+PM的最小值.
(1)求证:四边形AECF是矩形;
(2)当平行四边形ABCD的边或角满足什么关系时,四边形AECF是正方形?请说明理由.
(3)在(2)的条件下,若AE=4,点M为EC中点,当点P在线段AC上运动时,求PE+PM的最小值.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/13/651c638e-a801-4a5c-82ce-3efc3ccbd7f2.png?resizew=219)
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2021-08-14更新
|
170次组卷
|
3卷引用:河北省沧州市2020-2021学年八年级下学期期末数学试题
名校
解题方法
7 . 如图,在正方形ABCD中,E是BC上一点(不与点B,C重合),连接DE,点C关于直线DE的对称点为C′,AC′并延长交直线DE于点P,过点D,B分别作DF⊥AP于F,BK⊥AP于K.
(1)求∠FDP的度数
(2)连接BP,试证明BP=
AF.
(3)连接BC,若正方形ABCD的边长是
,请直接写出△BCP面积的最大值 .
(1)求∠FDP的度数
(2)连接BP,试证明BP=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(3)连接BC,若正方形ABCD的边长是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2021/6/27/2751743792054272/2784616085168128/STEM/f08d6dff330c42cca06edeeafa43bb96.png?resizew=139)
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8 . 如图,在边长为4的正方形ABCD中,将△ABD沿射线BD平移,得到△EGF,连接EC、GC.则EC+GC的最小值是( )
![](https://img.xkw.com/dksih/QBM/2021/5/7/2715705665363968/2781600464355328/STEM/c25aa80250cc45a7950a4c7058c0819a.png?resizew=124)
![](https://img.xkw.com/dksih/QBM/2021/5/7/2715705665363968/2781600464355328/STEM/c25aa80250cc45a7950a4c7058c0819a.png?resizew=124)
A.4![]() | B.5![]() | C.5![]() | D.6![]() |
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9 . 如图,矩形ABCD中,AB=2,BC=3,点P是矩形ABCD内一动点,且S△PAB=2S△PCD,则PC+PD的最小值为 ______________ .
![](https://img.xkw.com/dksih/QBM/2021/8/7/2780807686807552/2781864560467968/STEM/d454dc680a9d4e008670af2f10ea0b7f.png?resizew=150)
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2021-08-11更新
|
614次组卷
|
4卷引用:湖北省荆门市2020-2021学年八年级下学期期末数学试题
湖北省荆门市2020-2021学年八年级下学期期末数学试题2022年湖北省十堰市丹江口市初中毕业生学业水平诊断考试数学试题2022年湖北省十堰市房县毕业生学业水平诊断考试数学试题(已下线)专题07 矩形中的最值-【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)
名校
解题方法
10 . 如图,矩形ABCD的对角线AC,BD相交于点O,将△COD沿CD所在直线折叠,得到△CED.
(1)求证:四边形OCED是菱形;
(2)若AB=2,当四边形OCED是正方形时,求OC的长;
(3)若BD=3,∠ACD=30°,P是CD边上的动点,Q是CE边上的动点,求PE+PQ的最小值.
(1)求证:四边形OCED是菱形;
(2)若AB=2,当四边形OCED是正方形时,求OC的长;
(3)若BD=3,∠ACD=30°,P是CD边上的动点,Q是CE边上的动点,求PE+PQ的最小值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/8b686e11-8e41-4762-a6c2-30c65b7190ef.png?resizew=138)
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2021-08-08更新
|
616次组卷
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7卷引用:广东省惠州市2020-2021学年八年级下学期期末数学试题