1 . 如图1,在正方形
中,
,点
是射线
上一点,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/afac1e93-d101-451f-ab2f-fab05b0f6e02.png?resizew=363)
(1)当点
是边
的中点时,求证:
;
(2)如图2,点
分别是
的中点,依次连接
.
请判断四边形
的形状,并说明理由;
若点
是
的中点,连接
,当
的面积为
时,求
的长.
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe462dd495948ac5772e5e640607e4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/afac1e93-d101-451f-ab2f-fab05b0f6e02.png?resizew=363)
(1)当点
![](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/b848d81bf2e64bdec5aaed6ce6191d2c.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68f2c6d854d7ca94f77c0c9ba969dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764151f85f212f598031755d1f640e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a723e46c62760e7ef784f2dd0a371c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddf15f3ae42534288a2575cb4d1dc61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4269a5e908aefd0acecef045d0242d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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2023-02-27更新
|
93次组卷
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2卷引用:海南省省直辖县级行政单位乐东黎族自治县2022-2023学年九年级上学期期末数学试题
2 . 如图,在正方形
中,边长
,点Q是边
的中点,点P是线段
上的动点,则
的最小值为 _____ .
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b383463c6a9a3c104e9a4ce197b10946.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/e45c4622-8804-4fb0-8251-a0d02ba0022e.png?resizew=139)
您最近一年使用:0次
2023-02-19更新
|
316次组卷
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2卷引用:2023年海南省东方市中考一模数学试题
名校
3 . 已知,如图,正方形
中,
是边
上一点,
,
,垂足分别是点
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/a5f1843b-0cd9-470f-aa10-798a746a3469.png?resizew=151)
(1)求证:
.
(2)连接
,若
,
,求
的长.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f75139b83eee3bb961eea53d167098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e4cfac43251d5b66003b24890ee074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/a5f1843b-0cd9-470f-aa10-798a746a3469.png?resizew=151)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713318f209a6f9611c349b23aa980d1b.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae341f580ff8fbf21f616fe900b0e4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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2023-01-08更新
|
182次组卷
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2卷引用:海南省海口市秀英区北京大学附属中学海口学校2020-2021学年八年级下学期期中数学试题
名校
4 . 如图,已知正方形
,点E为
的中点,连接
交
于F,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/6f36bd3f-540d-4676-913e-8da278fddc3f.png?resizew=127)
![](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/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d2390cee316b614f7802d771832f0f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/6f36bd3f-540d-4676-913e-8da278fddc3f.png?resizew=127)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-12-19更新
|
210次组卷
|
9卷引用:海南省省直辖县级行政单位定安县2023-2024学年九年级上学期期中数学试题
海南省省直辖县级行政单位定安县2023-2024学年九年级上学期期中数学试题陕西省西安市碑林区西北工业大学附属中学2022-2023学年九年级上学期期中数学试卷 陕西省西安市碑林区2022-2023学年九年级上学期期中数学试题 陕西省西北工业大学附属中学2022-2023学年九年级上学期期中数学试题陕西省西安高新第一中学2023-2024学年九年级上学期第一次月考数学试题陕西省西安市西安高新第一中学2023-2024学年上学期九年级数学10月月考试题陕西省西安市碑林区西工大附中2022-2023学年九年级上学期期中数学试题陕西省西安市高新逸翠园中学等学校2023-2024学年九年级上学期期中联考数学试题内蒙古自治区鄂尔多斯市康巴什区2023-2024学年九年级上学期期末数学试题
名校
5 . 如图①,在正方形
中,点E、F、G、H分别在边
、
、
、
上,若
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/ab104e72-b99a-4fde-9a25-0ec3b4529d11.png?resizew=569)
(1)求证:
;
(2)如果把题目中的“正方形”改为“长方形”、若
,
(如图②),求
的值;
(3)如果把题目中的“
”改为“
与
的夹角为45°”(如图③),若正方形
的边长为2,
的长为
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846b1b49f05812b0761eb565062d32f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/ab104e72-b99a-4fde-9a25-0ec3b4529d11.png?resizew=569)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9016de3d17a389fb5d0952f616c19e0c.png)
(2)如果把题目中的“正方形”改为“长方形”、若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4488bce75c7e62b34fc8b738d610c4a7.png)
(3)如果把题目中的“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846b1b49f05812b0761eb565062d32f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
您最近一年使用:0次
2022-12-14更新
|
342次组卷
|
2卷引用:海南省海口市华侨中学等多所学校2021-2022学年九年级毕业班联考数学试题
6 . 如图,正方形
的边
上有一点
,连接
,延长
至点
,使得
,以
为边在正方形
的上方作正方形
,若
,
是
的黄金分割点,过点
作
交
于点
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb260c98edc7ab6c45e1c20a36a67b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0acf0cb533b345f906d436d58531316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42a8ba3ea434605e0574339efc9c38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de070deba7dc6144c425b00b7a04a2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8a2d84628fe0086ffc7d9b682225ea.png)
![](https://img.xkw.com/dksih/QBM/2022/11/23/3115935894142976/3128476092014592/STEM/52446722621f4752832278ecc0fb19d2.png?resizew=107)
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名校
7 . 在如图所示的正方形
中,点E在边
上,把
绕点C顺时针旋转得到
,且
,则旋转角的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/1e56385e-7083-4fcb-b179-a377826183ea.png?resizew=208)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13668f033d00acfc366f7e47949c4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c60020854430c59af2b092b691d447f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/1e56385e-7083-4fcb-b179-a377826183ea.png?resizew=208)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-28更新
|
259次组卷
|
7卷引用:海南省省直辖县级行政单位2023-2024学年九年级上学期期末数学试题
海南省省直辖县级行政单位2023-2024学年九年级上学期期末数学试题河北省保定市满城区满城镇中学2022-2023学年九年级上学期期中考试数学试题黑龙江省鹤岗市第二十四中学2022-2023学年九年级上学期期末考试数学试题广东省广州市越秀区第二中学2022-2023学年九年级上学期12月月考数学试题(已下线)专题1.8 正方形的性质与判定(分层练习)(基础练)-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)专题9.27 正方形(分层练习)(基础练)-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)第九单元 中心对称图形-平四边形达标测试卷-2023-2024学年八年级数学下册《知识解读·题型专练》(苏科版)
8 . 如图,在边长为1的正方形
中,点P是对角线
上(不与点B,D重合)的任意一点,且
于点E,
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/6811b2ae-89dd-4d48-83b0-5eac0a5e669b.png?resizew=142)
(1)求证:①
;
②
;
(2)若
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdd2adb9ba62d9ff017e2e743aed277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7edadd9995393ece0d7b7bf4801504bd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/6811b2ae-89dd-4d48-83b0-5eac0a5e669b.png?resizew=142)
(1)求证:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb350cb6e6764d2fa68f6c4229c24d34.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d920e79d664f9488953bc2fa406cb4ef.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5c3999dcd9e131f58f76bbe15b55f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
您最近一年使用:0次
名校
9 . 如左图,在矩形
中,
,E为
的中点,F,G分别在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/03b43405-de0b-468c-8321-7fed886852a9.png?resizew=405)
(1)求证:
;
(2)若
,
,求
的长;
(3)如右图,M为
的中点,连接
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196391195e710dfcae03a83c047aa2a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd3724385f98a2415ba27f8df4c31d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04322725b1c5adcdb5eefc985df41fc1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/03b43405-de0b-468c-8321-7fed886852a9.png?resizew=405)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ae549d6cda2266a7dbbb323865fbeb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c593623f6ea47b28a3e3a5d71829cc78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ca0c00fc253d8d67fbe5a10f09990e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)如右图,M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6627f6795743b425508593880a156e7c.png)
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10 . 如图1,四边形ABCD是正方形,M是BC边上的一点,E是CD边的中点,AE平分∠DAM.
(2)若四边形ABCD是长与宽不相等的矩形,其他条件不变,如图2,试判断AM=AD+MC是否成立?若成立,请给出证明,若不成立,请说明理由.
(3)若(2)中矩形ABCD两边AB=6,BC=9,则AM= .(填答案)
(2)若四边形ABCD是长与宽不相等的矩形,其他条件不变,如图2,试判断AM=AD+MC是否成立?若成立,请给出证明,若不成立,请说明理由.
(3)若(2)中矩形ABCD两边AB=6,BC=9,则AM= .(填答案)
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