名校
1 . 如图,在矩形
中,对角线
与
相交于点
,垂足为点
,且
,则
的长为___________ .
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578b89b9e9a8aa53122722cad60abc2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8400dbb68eca9ae53e3a847430a39c7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d914116e5da89598a444bf9fff4692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/1b960fa6-0d43-4113-aa23-8dbdd890e653.png?resizew=231)
您最近一年使用:0次
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2 . 如图,PA、PB分别与
相切于点A,B,点M在PB上,且OM
AP,MN⊥AP,垂足为点N.若
的半径R=3, PA=9,则OM的长是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2020/11/17/2594836385193984/2597680557441024/STEM/56a28e8f9ba34a4fb62fd4b47d2fb391.png?resizew=110)
您最近一年使用:0次
2020-11-21更新
|
259次组卷
|
4卷引用:江苏省苏州市草桥中学校2020-2021学年九年级上学期期中数学试题
江苏省苏州市草桥中学校2020-2021学年九年级上学期期中数学试题江苏省苏州市姑苏区草桥中学2020-2021学年九年级上学期期中考试数学试卷(已下线)专题21与圆有关的位置关系-备战2021年中考数学考点 核心考点清单(江苏专用)(已下线)期中检测卷(中)-2021-2022学年苏科版九年级数学上册同步单元检测
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3 . 求证:直角三角形斜边上中线等于斜边的一半.
已知:如图,在
中,
,点
是
的中点.求证:
.
![](https://img.xkw.com/dksih/QBM/2020/11/2/2584234017480704/2585585488175104/STEM/2fba4152de8f40c4a475ffc4016ee1ba.png?resizew=171)
证明:延长
到
,使
,
连接
、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
中间的证明过程排乱了:
①∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
②∵
,
;
③∴四边形
是平行四边形;
④∴四边形
是矩形.
∴
,∴
.
则中间证明过程正确的顺序是( ).
已知:如图,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fc58dc365e8bb140a95746bbfb5abb6.png)
![](https://img.xkw.com/dksih/QBM/2020/11/2/2584234017480704/2585585488175104/STEM/2fba4152de8f40c4a475ffc4016ee1ba.png?resizew=171)
证明:延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce05f91ce17863abc8a5a8f6002b75.png)
连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
中间的证明过程排乱了:
①∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
②∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0866e1551b61074ca8e61261ecd1f9dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434384585c6dcae0e0f2a2b4a8a12900.png)
③∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
④∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb327ea45497cfa5724ea984b92569ee.png)
则中间证明过程正确的顺序是( ).
A.①④②③ | B.①③②④ | C.②④①③ | D.②③①④ |
您最近一年使用:0次
2020-11-04更新
|
485次组卷
|
8卷引用:2020年河北省衡水市九年级初中毕业生升学文化课模拟(一)数学试题
4 . 如图,在矩形ABCD中,对角线AC,BD相交于点O,若∠BOC=120°,AB=4,则BC的长为_____ .
![](https://img.xkw.com/dksih/QBM/2020/10/12/2569517971578880/2570355341713409/STEM/2c60b9b50c7448fc864298a3e5eb3b5f.png?resizew=139)
您最近一年使用:0次
2016九年级·河北·专题练习
5 . 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.![]() |
您最近一年使用:0次
名校
6 . 如图,在矩形ABCD中,AB=2,对角线AC与BD相交于点O,AE⊥BD,垂足为E.若BE=EO,则AD的长是( )
![](https://img.xkw.com/dksih/QBM/2020/9/12/2547945352298496/2554809530220544/STEM/738068f661504780bf1ecfb4b9019eed.png?resizew=184)
![](https://img.xkw.com/dksih/QBM/2020/9/12/2547945352298496/2554809530220544/STEM/738068f661504780bf1ecfb4b9019eed.png?resizew=184)
A.6![]() | B.2![]() | C.3![]() | D.2![]() |
您最近一年使用:0次
2020-09-28更新
|
446次组卷
|
2卷引用:江苏省南京市高淳区2019-2020学年八年级下学期期末数学试题
7 . 矩形
的两条对角线相交于
点,
,若
,则矩形的对角线
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1eb76fe74cba30f7cbcde349ba80da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.2 | B.4 | C.![]() | D.![]() |
您最近一年使用:0次
8 . 如图,
是矩形
的对角线,分别以点
为圆心,以大于
的长为半径画弧,两弧交于点
,直线
交
于点
,交
于点
,若
,
,则线段
的长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c93148adbc6e856da9a9d263f485d003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b947acc328f9561e1d7b78f9bbed9263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184d2391dbe4d7b00a5666fd4a2e2195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2020/9/12/2548298890125312/2550466107449344/STEM/f0d9bd9d4297480ebe50b0255abd7c84.png?resizew=156)
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9 . 一个长方体的体积是
,长是
,宽是
,则它的高是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041cc0fe7500cfa5d4f2d92781fdce33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/726c9529b954e2f97a022ced1747c9cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd82a51bb9237a8e70289b2939b76fd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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10 . 如图.在矩形ABCD中,E为AD的中点,∠BED的角平分线交BC于F.若AB=6, BC=16,则FC的长度为 ( )
A.4 | B.5 | C.6 | D.8 |
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2020-09-16更新
|
152次组卷
|
7卷引用:2020年陕西省铜川市新区中考数学一模试题
2020年陕西省铜川市新区中考数学一模试题广东省深圳宝安区北亭实验学校2020-2021学年九年级上学期开学考试数学试题(已下线)【万唯原创】矩形、菱形、正方形·基础必练(一)(已下线)【万唯原创】矩形、菱形、正方形·满分特训(一)(已下线)【万唯原创】矩 形·满分特训(三)(已下线)【万唯原创】2021年陕西省面对面-练习册-第一部分第五单元31河北省唐山市第九中学2023-2024学年八年级下学期月考数学试题