名校
1 . 如图1,在正方形纸片
中,点E是
的中点.将
沿
折叠,使点A落在点F处,连结
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/f3005da0-bfa4-435e-845c-74e786591027.png?resizew=495)
(1)求证:
.
(2)如图2,延长
交
于点G,求
的值.
(3)如图3,将
沿
折叠,此时点C的对应点H恰好落在
上.若记
和
重叠部分的面积为
,正方形
的面积为
,求
的值.
![](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/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/f3005da0-bfa4-435e-845c-74e786591027.png?resizew=495)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2cab9d4531e1963402a8cbb61bfe07c.png)
(2)如图2,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc1db5e48db4c59fcdda8812c0431a3.png)
(3)如图3,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaecf08a22124a457128fb04c9c02bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978a7a0baaa1a4e7cdac80a6a91a0ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
2023-04-23更新
|
494次组卷
|
3卷引用:2023年浙江省嘉兴市南湖区中考一模数学试题
2 . 如图,在平面直角坐标系中,
,
,P是x轴上动点,连结
,将线段
绕点A逆时针旋转
得到线段
,连结
,取
中点为M.
的度数为______ ,
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9c730266ecf448c14608e24d37b986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d9cc98e6df306063e645044f0faa7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a73d7cf14b54902d8771fbe423ffd8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/15/8464e785-0d32-4b54-a16d-64f5eb585059.png?resizew=142)
您最近一年使用:0次
3 . 如图,抛物线
与
轴相交于点
,与
轴相交于点
,已知
两点的坐标为
.点
是抛物线上第一象限内一个动点,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/16/cd6dd93e-5db8-4e9b-baf4-34a09e4bb810.png?resizew=321)
(1)求抛物线的解析式,并求出
的坐标;
(2)如图1,
轴上有一点
,连接DP交
于点
,若
恰好平分
, 求点
的坐标;
(3)如图2,连接
交
于点
,以
为直径作圆交
于点
,若
关于直线
轴对称,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e478787ebfeb68a5a7594dbd9eecd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7984f981be538e49d1538cab8fd70291.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/16/cd6dd93e-5db8-4e9b-baf4-34a09e4bb810.png?resizew=321)
(1)求抛物线的解析式,并求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c438179bc202aaf7299483c76e18817c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3355e2fa0ac6c675f02ee36c3ced4f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a373959bb9026f8a09845c0b828bf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
4 . 如图,矩形
中,
,
,点
是线段
上一个动点,连结
,将
绕点
顺时针旋转
,得到
,连结
,
.
(1)当
时,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d76b7ef0f713e79595f41da27be550c7.png)
__
;
(2)当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f76e37d6e6b182896ccaaa187cfe07.png)
__ 时,能使
与
面积相等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc90c2d45477e166b02359525f40aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d76b7ef0f713e79595f41da27be550c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f76e37d6e6b182896ccaaa187cfe07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e5a933a2a0ff3a28009cc989293ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13668f033d00acfc366f7e47949c4462.png)
![](https://img.xkw.com/dksih/QBM/2022/12/5/3124055543660544/3127316705419264/STEM/bbed317d2dd64723875a04c7b8966206.png?resizew=199)
您最近一年使用:0次
名校
5 . 如图1,抛物线
与x轴交于点
,与y轴交于点C,点P为x轴上方抛物线上的动点,点F为y轴上的动点,连接PA,PF,AF.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/93d2d246-cf1c-41df-9258-bba84589c65d.png?resizew=336)
(1)求该抛物线所对应的函数解析式;
(2)如图1,当点F的坐标为
,求出此时△AFP面积的最大值;
(3)如图2,是否存在点F,使得△AFP是以AP为腰的等腰直角三角形?若存在,求出所有点F的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217db82fb4ad09b89ccac74e2745c28c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852a0a78652fe92a0169c24c2961fa56.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/93d2d246-cf1c-41df-9258-bba84589c65d.png?resizew=336)
(1)求该抛物线所对应的函数解析式;
(2)如图1,当点F的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f1698e19a176c910ffd4881a2aaf5d.png)
(3)如图2,是否存在点F,使得△AFP是以AP为腰的等腰直角三角形?若存在,求出所有点F的坐标;若不存在,请说明理由.
您最近一年使用:0次
2022-10-19更新
|
1006次组卷
|
10卷引用:浙江省嘉兴市桐乡市求是实验中学2022-2023学年九年级上学期期中数学试题
浙江省嘉兴市桐乡市求是实验中学2022-2023学年九年级上学期期中数学试题2022年海南省琼海市九年级下学期义务教育阶段教学质量监测(二模)数学试题(已下线)第18讲 二次函数中特殊几何图形存在性(探究性)问题-【暑假自学课】2022年新九年级数学暑假精品课(人教版)浙江省温州市第十二中学2022-2023学年九年级上学期9月月考数学试题山东省滨州市无棣县2022-2023学年九年级上学期期中数学试题(已下线)题型六 函数与几何图形动态探究题广东省中山市八校联考2022-2023学年九年级下学期3月月考数学试卷云南省昆明市盘龙区黄冈中学2022-2023学年九年级上学期期中考试数学试卷广东省梅州市丰顺县潭江中学2022-2023学年九年级下学期开学考试数学试题湖南省长沙市雅礼实验中学2022-2023学年九年级上学期开学考试数学试题
19-20九年级上·浙江嘉兴·期中
6 . 若一个四边形的两条对角线互相垂直且相等,则称这个四边形为“奇妙四边形”.如图1,四边形
中,若
,则称四边形
为奇妙四边形.根据“奇妙四边形”对角线互相垂直的特征可得“奇妙四边形”的一个重要性质:“奇妙四边形”的面积等于两条对角线乘积的一半.根据以上信息回答:
![](https://img.xkw.com/dksih/QBM/2020/8/29/2538336203833344/2538397755228160/STEM/4d9c5c9eddd8403f93d48f3d4b773571.png?resizew=412)
(1)菱形_____“奇妙四边形”(填“是”或“不是”);
(2)已知
的半径为6,四边形
是
的内接“奇妙四边形”,对角线
,
相交于点E.
①如图2,若
,求“奇妙四边形”
的面积;
②连接
,若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4484509879d3ebacccc8a187f7962465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2020/8/29/2538336203833344/2538397755228160/STEM/4d9c5c9eddd8403f93d48f3d4b773571.png?resizew=412)
(1)菱形_____“奇妙四边形”(填“是”或“不是”);
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
①如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93af9774200946261f0ccba3e6eeba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
7 . 如图直角坐标系中直线 AB 与 x 轴正半轴、y 轴正半轴交于 A,B 两点,已知 B(0,4),∠BAO=30°,P,Q 分别是线段 OB,AB 上的两个动点,P 从 O 出发以每秒 3 个单位长度的速度向终点 B 运动,Q 从 B 出发以每秒 8 个单位长度的速度向终点 A 运动,两点同时出发,当其中一点到达终点时整个运动结束,设运动时间为 t(秒).
(1)求线段 AB 的长,及点 A 的坐标;
(2)t 为何值时,△BPQ 的面积为
;
(3)若 C 为 OA 的中点,连接 QC,QP,以 QC,QP 为邻边作平行四边形 PQCD,
①t 为何值时,点 D 恰好落在坐标轴上;
②是否存在时间 t 使 x 轴恰好将平行四边形 PQCD 的面积分成 1∶3 的两部分,若存在,直接写出 t 的值.
(1)求线段 AB 的长,及点 A 的坐标;
(2)t 为何值时,△BPQ 的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb57575dea540c569265de158429425.png)
(3)若 C 为 OA 的中点,连接 QC,QP,以 QC,QP 为邻边作平行四边形 PQCD,
①t 为何值时,点 D 恰好落在坐标轴上;
②是否存在时间 t 使 x 轴恰好将平行四边形 PQCD 的面积分成 1∶3 的两部分,若存在,直接写出 t 的值.
![](https://img.xkw.com/dksih/QBM/2019/4/25/2189877531459584/2191515363950592/STEM/c1fcfe8b1e2443fdad254085b76459fe.png?resizew=363)
您最近一年使用:0次
2019-04-27更新
|
257次组卷
|
3卷引用:浙江省嘉兴地区2018-2019学年八年级下学期质量检测(二)数学试题
浙江省嘉兴地区2018-2019学年八年级下学期质量检测(二)数学试题【校级联考】浙江省杭州市萧山区城厢片五校2018-2019学年八年级下学期期中联考数学试题(已下线)【新东方】初中数学999【2020年】【初二下】
8 . 如图,在
中,
,
,
,点
为
的中点,以点
为圆心作圆心角为
的扇形
,点
恰在弧
上,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/539c86ea-5010-4f6e-a514-33384e9fd9c3.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71053b2dba1f1d12805269920eb68d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82862a3ea06d5c719ac26406d19f4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7fa3aea72ccc36948a4a90f7368f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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20卷引用:浙江省嘉兴市2021-2022学年九年级上学期期末数学试题
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