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1 . 如图,矩形ABCD的对角线AC,BD交于点O,AB=3,BC=4,过点O作OE⊥AC,交AD于点E,过点E作EF⊥BD,垂足为F,则OE+EF的值为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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9卷引用:山东省济南市历城区2020-2021学年九年级上学期期中数学试题
山东省济南市历城区2020-2021学年九年级上学期期中数学试题内蒙古自治区包头市东河区2023-2024学年九年级上学期期末数学试题(已下线)考点17 矩形、菱形、正方形(考点专练)-备战2021年中考数学考点微专题(已下线)第14讲 特殊的平行四边形全章复习与测试-【暑假自学课】2022年新九年级数学暑假精品课(北师大版)山东省泰安市泰山区2020-2021学年八年级下学期期中数学试题山东省泰安市东平县实验中学2022-2023学年八年级下学期3月月考数学试题(已下线)第03讲 矩形(3个知识点+5类热点题型讲练+习题巩固)-【帮课堂】2023-2024学年八年级数学下册同步学与练(人教版)山东省泰安市新泰市宫里镇初级中学(五四制)2023-2024学年八年级下学期第一次作业检查数学试题(已下线)第01讲 矩形的性质和判定(知识解读+达标检测)-2023-2024学年八年级数学下册《知识解读·题型专练》(浙教版)
2 . 如图,在矩形
中,
,
,
的平分线
交
于点
.点
,
分别是
,
的中点,则
的长为( )
![](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/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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18卷引用:内蒙古满洲里市2018-2019学年八年级下学期期末数学试题
内蒙古满洲里市2018-2019学年八年级下学期期末数学试题湖北省武汉市育才中学2018-2019学年八年级第二学期期中考试数学试题人教版八年级下第十八章 平行四边形 18.2.1矩形湖北省武汉市江岸区二中2018-2019学年八年级下学期期中数学试题湖北省江夏区2019-2020学年八年级下学期期末数学试题山东省青岛市开发区实验学校2020-2021学年九年级上学期期末模拟数学试题福建省三明市2020-2021学年九年级上学期期末数学试题(已下线)【万唯原创】2021年山西专项集训-解答题专项-第三部分选填题组集训1+2黑龙江省大庆市肇州县(五四学制)2020-2021学年八年级下学期期末考试数学试题安徽省淮南市田家庵区2020-2021学年八年级下学期期末数学试题江西省赣州市石城县2020-2021学年八年级下学期期末数学试题黑龙江省牡丹江市林口县2020-2021学年八年级下学期期末数学试题湖北省武汉市湖北华一寄宿学校2020-2021学年八年级下学期4月月考数学试题湖北省武汉市江夏区2022-2023学年八年级下学期期中考试数学试卷湖北省武汉六中2022-2023学年八年级下学期3月月考数学试题湖南省长沙外国语学校2023-2024学年九年级上学期开学考试数学试题18.2.1 矩形 随堂检测湖北省荆门市龙泉北校2023-2024学年八年级下学期期中数学试题
3 . 如图,点
在矩形
对角线
上由
向
运动,且
,
,连结
,过点
作
,交
于点
(当点
与点
重合时,点
也停止运动).
(1)如图1,当
平分角
时,求
的长度.
![](https://img.xkw.com/dksih/QBM/2020/12/9/2610333624983552/2614014387724288/STEM/19bfcf8032cd45c88bb4447531f38371.png?resizew=164)
(2)如图2,连结
,与
交于点
,若
时,求四边形
的面积.
![](https://img.xkw.com/dksih/QBM/2020/12/9/2610333624983552/2614014387724288/STEM/e5ddcac0eb174b719b32829e6a9f6af3.png?resizew=164)
(3)若点
分
为1:2两部分时,求
.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392b9e1a179a6676362679354a9e7e51.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/b5f0805cc7a96c866df10b667ac4851e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3b0b11a80e8b107e55534d7fda9f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/2020/12/9/2610333624983552/2614014387724288/STEM/19bfcf8032cd45c88bb4447531f38371.png?resizew=164)
(2)如图2,连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec07464a1b5bc7a2cc338b1a13e0f4a6.png)
![](https://img.xkw.com/dksih/QBM/2020/12/9/2610333624983552/2614014387724288/STEM/e5ddcac0eb174b719b32829e6a9f6af3.png?resizew=164)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7175aeb7fccac3a831dc620f9f0b325c.png)
![](https://img.xkw.com/dksih/QBM/2020/12/9/2610333624983552/2614014387724288/STEM/6e7b494505004320baefbc1c9dd64f87.png?resizew=209)
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2020-12-14更新
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3卷引用:2020年四川省成都市金牛区中考数学二诊试题
4 . 如图,矩形草坪ABCD中,AD=10 m,AB=
m.现需要修一条由两个扇环构成的便道HEFG,扇环的圆心分别是B,D.若便道的宽为1 m,则这条便道的面积大约是( )(精确到0.1 m2)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/3/673d114f-cf6d-4eff-abfa-91492a17c944.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e4123975f257306440158659634c4a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/3/673d114f-cf6d-4eff-abfa-91492a17c944.png?resizew=199)
A.9.5 m2 | B.10.0 m2 | C.10.5 m2 | D.11.0 m2 |
您最近一年使用:0次
5 . 如图,在
中,点
,
,
分别是边
,
,
的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/28/1be2b946-2315-455a-9a8a-e61870e42878.png?resizew=189)
(1)求证:四边形
为矩形.
(2)若
,连接
和
且
交
于点
、
交
于点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/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/f494278f043f077db08375ee3d58faff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/28/1be2b946-2315-455a-9a8a-e61870e42878.png?resizew=189)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08c14e87a2bcf7090eab2fea73667d2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b173ac8cc4ac4f1c9e1daaa605fbb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d177466ea28391255d861532d48ac3d.png)
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6 . 如图,直角梯形ABCD中AD∥BC,∠D=90°.∠A的平分线交DC于E,EF⊥AB于F.已知AD=3.5cm,DC=4cm,BC=6.5cm.那么四边形BCEF的周长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/d1929381-16b0-4ee0-9b78-9e8bb6595b43.png?resizew=110)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/d1929381-16b0-4ee0-9b78-9e8bb6595b43.png?resizew=110)
A.10cm | B.11cm | C.11.5cm | D.12cm |
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7 . 如图,在矩形纸片ABCD中,
,
,点E在CD上,将
沿BE折叠,点C恰落在边AD上的点F处;点G在AF上,将
沿BG折叠,点A恰落在线段BF上的点H处,有下列结论:
①
;②
;③
;④
.
其中正确的是__________ 把所有正确结论的序号都选上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e8c3cf4bbfa6e00d38761560ddc6b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e24e9da4baf5f37f723a7577d2cb30f5.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0674de6b6f6737ca9e4e9eb71a8ef31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/540284a9604f97b6f885dd7f9c3ad6d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592201c1d2142fe929d23835c1cd7104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fec7a0df011701b0aea04f9ddb04465.png)
其中正确的是
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571483861008384/2572933312815104/STEM/908e0305-ecc3-44b2-b6db-6cd7e6e3c6ef.png)
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2016九年级·河北·专题练习
8 . 如图在
中,弦
于点
于点
,若
则
的半径
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/fcca3e27-727a-43a9-9d48-0817acb87d83.png?resizew=144)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3967d482f9ab51f9928a80314cf6be35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbda21242ab8ae6bea257ad867a318f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71df091bc351493f83f56470fcd699ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/fcca3e27-727a-43a9-9d48-0817acb87d83.png?resizew=144)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
9 . 疫情期间,为了保障大家的健康,各地采取了多种方式进行预防,某地利用无人机规劝居民回家.如图,一条笔直的街道
,在街道
处的正上方
处有一架无人机,该无人机在
处测得俯角为
的街道
处有人聚集,然后沿平行于街道
的方向再向前飞行60米到达
处,在
处测得俯角为
的街道
处也有人聚集,已知两处聚集点
之间的距离为120米,求无人机飞行的高度
.(参考数据:
,
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8141d00b74eb4c50bf861e6ff0edf137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f90eb172dbd2ff7ae6f705801c0737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce594c2e656e81fbc5eafb9894d7c27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c291f612acfeac34fe33bf6813fa79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64b2212b8e55d836116ab29571b53ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52881be613aa404e553da30d8987cfad.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/20/e79997af-7c69-4d3f-a571-16b90bab9af4.png?resizew=241)
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2020-10-07更新
|
1118次组卷
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14卷引用:广东省深圳市福田区南华实验学校2019-2020学年中考数学押题卷(二)
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10 . 如图1,四边形ABCD中,AB∥CD,∠B=90°,AC=AD.动点P从点B出发,沿折线B-A-D-C方向以1.5单位/秒的速度匀速运动,在整个运动过程中,△BCP的面积S与运动时间t(秒)的函数图象如图2所示,则下列线段长度错误 的是( )
![](https://img.xkw.com/dksih/QBM/2020/8/5/2521270827507712/2524227117432832/STEM/86a0619454ad4de7b21b02457298a833.png?resizew=264)
![](https://img.xkw.com/dksih/QBM/2020/8/5/2521270827507712/2524227117432832/STEM/86a0619454ad4de7b21b02457298a833.png?resizew=264)
A.AB=6 | B.BC=8 |
C.![]() | D.CD=12 |
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