名校
1 . 如图,在矩形
中,
,动点P、Q分别从点A、C同时出发,点P以
的速度向终点B匀速运动,点Q以
的速度向终点D匀速运动,当有一点到达终点时,另一点也停止运动,设运动时间为
.
(1)当
时,求四边形
的面积;
(2)当t为何值时,
为
?
(3)当
___,以点P、Q、D为顶点的三角形是等腰三角形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/945a3ae3e8eea026bd6dc3721eab4852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ba95116dc790b935d65bf540799cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4bf2ed4e49655ce765ba6ffbb6c7d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1a48b92c61d209d0556e4cd8fdb70b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/2/5dca6f58-6dac-4200-b015-f014dee39715.png?resizew=81)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae996f17c142d99dd990efb01c39621.png)
(2)当t为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ebb146eb2bb253c5b9fe67f9f963c01.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
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|
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5卷引用:贵州省遵义市桐梓县思源实验学校2019-2020学年九年级上学期期中数学试题
名校
2 . 如图,在平面直角坐标系中,O为坐标原点,四边形
是矩形,点A,C的坐标分别为
,点D以
的速度从A出发向终点O运动,点P以
的速度从C出发向终点B运动,当
是以
为一腰的等腰三角形时,点P的坐标为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d8ac6faea10e31a4cb0b84f4011856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42670ba76f7d6667851b86772eec24f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b996e05aecd15a1416b8475c73c02c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/19/0b99cbd9-9a61-4c56-adb5-1b46a3e08134.png?resizew=159)
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|
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4卷引用:浙江省瑞安市六校联盟2017-2018学年八年级下学期学业水平数学试题
浙江省瑞安市六校联盟2017-2018学年八年级下学期学业水平数学试题(已下线)第一章 特殊平行四边形 章末测试卷(培优卷)-2023-2024学年九年级数学上册《知识解读·题型专练》(北师大版)江西省南昌市复兴外国语学校2023-2024学年九年级上学期开学数学试题江西省南昌市南昌县2023-2024学年九年级上学期期中数学试题
名校
3 . 已知点E、F分别是四边形
边
上的点,且
与
相交于点G.
(1)如图①,若
,
,
,且
,求证:
;
(2)如图②,若
,
,求证:
;
(3)如图③,若
,
,当
时,直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce8ebe684ab4fd905deddd160462847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/2/4b6bc1ac-cb10-4977-b3fb-f9d7ea8ccea6.png?resizew=416)
(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1034d8550b804899e1b6be3f6f8cf95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1575c99a4e89227be9436a46abc756b.png)
(2)如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6de97256970c4f56abd84f3572d2eaa.png)
(3)如图③,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd0cc95217ffdaed3a7e50746683868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9cfa0686455571e9ae168077b03b46c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ada5e380d6b5b2066e34497e5f0baf0.png)
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|
146次组卷
|
5卷引用:【区级联考】湖南省常德市鼎城区2019届九年级(上)期中数学试题
【区级联考】湖南省常德市鼎城区2019届九年级(上)期中数学试题江苏省苏州市外国语学校2018-2019学年八年级第二学期期末考试数学试题湖南省永州市冷水滩区2021-2022学年九年级上学期期末数学试题2023年湖南省湘潭市湘潭县湘潭江声实验学校中考三模数学试题(已下线)专题07 相似三角形常考的模型及压轴题-【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(湖南专用)
名校
4 . 如图,小明在公园放风筝,拿风筝线的手
离地面高度
为
,风筝飞到
处时的线长
为
,这时测得
,求此时风筝离地面的高度.(精确到
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6244c4be2c661dc2166885d65bbad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1611d15c7e1e4ab4a4a61537b3989d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6004eee4a174dcbd264717758c8bc83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfaa19eeaf415ed419e77fe92794f443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/382122a69d7a497aaf308f02b6a81add.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/31/dec59e51-738b-4db3-a132-dc0e88174289.png?resizew=144)
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5 . 图1是小明在健身器材上进行仰卧起坐锻炼时的情景,图2是小明锻炼时上半身由
位置运动到与地面垂直的
位置时的示意图.已知
米,
米,
.(参考数据:
,
,
)
(1)求
的长.
(2)若测得
米,试计算小明头顶由N点运动到M点的路径
的长度.(结果保留
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a913218fcc7726851e26654f7e44c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493283e1cd8a857dcf56eff6ef88f893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c96cb3ac8290e09c55d4eb336a8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1c1f4cfcce790342cdbf02b2d23e9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b25098b4afddf05c8c6d293f2eb20e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b2f83631f80bb64cf8918294839ac3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/24/66175d17-63d6-42da-8838-8cd4041d6248.png?resizew=295)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若测得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30ad186d531a980cb3737722deddb0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ae728c7be0f0cf78711f3fa5ccccf30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
您最近一年使用:0次
20-21八年级上·广东深圳·阶段练习
6 . 如图,已知
中,
,以斜边
为边向外作正方形
,且正方形的对角线交于点
,连接
.已知
,
,则另一直角边
的长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2430b29c871bbd9e6b65bf84f5642acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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7 . 如图,
中,
,
,
.分别以
、
、
为边在
的同侧作正方形
、
、
,四块阴影部分的面积分别为
、
、
、
.则
等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/b9eb3169-76b9-483c-b439-fe8f851be97f.png?resizew=200)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100bb28abda3a65c2a61fa6db2e3f8d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae7f709cd4bf123f329605b2f9ea679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838a984dff7abdc750c97afd75e962eb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/b9eb3169-76b9-483c-b439-fe8f851be97f.png?resizew=200)
A.14 | B.16 | C.18 | D.20 |
您最近一年使用:0次
2023-07-11更新
|
193次组卷
|
13卷引用:2015届江苏省江阴市青阳片九年级3月月考数学试卷
2015届江苏省江阴市青阳片九年级3月月考数学试卷河南省开封市西北片区2017-2018学年联考八年级(下)期中数学试卷【校级联考】山东省临沂市平邑县2018--2019学年八年级下学期期中数学试题浙江省宁波市2018-2019学年八年级第一学期期中数学试题2022年广东省潮州市潮安区中考一模数学试题2023年广东省潮州市潮安区中考二模数学试题(已下线)第三章 勾股定理单元检测卷(难)-2021-2022学年苏科版八年级数学上册同步单元检测江西省上饶市玉山县2021-2022学年八年级下学期期中数学试卷福建省漳州市第二中学2022-2023学年八年级上学期第一次月考数学试题(已下线)18.2.3 正方形-2022-2023学年八年级数学下册《考点·题型·技巧》精讲与精练高分突破系列(人教版)(已下线)9.4 矩形、菱形、正方形-2022-2023学年八年级数学下册《考点·题型·技巧》精讲与精练高分突破系列(苏科版)黑龙江省哈尔滨市香坊区2022—2023学年八年级下学期期末数学试题广东省潮州市饶平县2022-2023学年八年级下学期期中数学试题
8 . 如图,在
中,
,
,
,
为边
上一动点(点
不与点
,
重合),
于点
,
于点
,
为
的中点,设
,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04fb30a9d07e410ac92c34b8ad0133db.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e787bb792dcd936cb4e87023c95011b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/01983932-3628-411b-820e-df3a0c308526.png?resizew=245)
您最近一年使用:0次
9 . 如图,已知
内接于⊙O,
是⊙O的直径,点F在⊙O上,且点C是弧
的中点,过点C作⊙O的切线交
的延长线于D点,交
的延长线于E点.
![](https://img.xkw.com/dksih/QBM/2023/1/19/3156058357587968/3245890807742464/STEM/f817f85d31f740c386029fc182b90e61.png?resizew=179)
(1)求证:
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/2023/1/19/3156058357587968/3245890807742464/STEM/f817f85d31f740c386029fc182b90e61.png?resizew=179)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5427b7b994b860628df3d6b7a07de8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691048ce61c91a8a3680fa3025193160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
10 . 如图,在
中,
,
,
,点P为斜边
上一动点,过点P作
于E,
于点F,连接
,则线段
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc56fdf70e65bd88980c64af96b83da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7edadd9995393ece0d7b7bf4801504bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
A.24 | B.![]() | C.![]() | D.5 |
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2023-05-08更新
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194次组卷
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3卷引用:贵州省贵阳市云岩区华文实验中学2020-2021学年九年级上学期9月月考数学试题