如图,在
中,
的垂直平分线分别交
于点
,
交
于点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/6078ea58-fc32-40b3-901d-9cd37ce753c8.png?resizew=211)
(1)求证:
;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887721a843b2dc8e947cc42d09868e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/6078ea58-fc32-40b3-901d-9cd37ce753c8.png?resizew=211)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00337fb65769a29df1e5512a66f11548.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8adb777f21266112772a87687f466a.png)
更新时间:2024-03-08 09:16:27
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,在
的正方形网格中,每个小正方形的边长都为
,网格中有一个格点
(即三角形的顶点都在格点上).
(1)在图中作出
关于直线
对称的
;(要求:
与
与
与
相对应)
(2)若有一格点
到点的
距离相等(
), 则网格中满足条件的点
共有 个;
(3)在直线
上找一点
,使
的值最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a96e9c2e2a15130d1d56a1d0e16b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
(1)在图中作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8e5e17ca43b4017eb49e35cd27ba6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc1c7c8ba6bb5bf0f00ebe417412150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6945d131b27fd38a9e133a2440b8b578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3557809c066e68395b614535a7675e76.png)
(2)若有一格点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5294948554ffa3110daaacf397cd357c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f931d48d64ce0b606bc4674d5e0dc6.png)
![](https://img.xkw.com/dksih/QBM/2020/12/22/2625449126486016/2630489385336832/STEM/e2be880d-baf3-4bc7-b225-91b97da1df2e.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,在长度为1个单位长度的小正方形组成的正方形网格中,
的三个顶点A、B、C都在格点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/25/470c9574-81a7-49e2-83ee-8b21b0760c75.png?resizew=457)
(1)在图1中画出与
关于直线l成轴对称的
;
(2)在图1中的直线l上找出一点Q,使得
的值最小(保留作图痕迹并标上字母Q)
(3)在图2中的直线l上找出一点P,使得
的值最大(保留作图痕迹并标上字母P)
(4)在正方形网格中存在________个格点,使得该格点与B、C两点构成以BC为底边的等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/25/470c9574-81a7-49e2-83ee-8b21b0760c75.png?resizew=457)
(1)在图1中画出与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)在图1中的直线l上找出一点Q,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2339b7b98c47b4a339030dc2dbd5c5c3.png)
(3)在图2中的直线l上找出一点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358fc84845695e6eb58ffdf82394a16b.png)
(4)在正方形网格中存在________个格点,使得该格点与B、C两点构成以BC为底边的等腰三角形.
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解答题-作图题
|
适中
(0.65)
【推荐3】2019年12月18日,新版《北京市生活垃圾管理条例》正式发布,并将在2020年5月1日起正式实施,这标志着北京市生活垃圾分类将正式步入法制化、常态化、系统化轨道.目前,相关配套设施的建设已经开启.如图,计划在某小区建一个智能垃圾分类投放点P,需要满足以下条件:附近的两栋住宅楼A、B到智能垃圾分类投放点P的距离相等;P点到两条道路OM、ON的距离相等.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/36ecb62c-2123-4012-b5f5-52737aa87f78.png?resizew=346)
(1)请在图中利用尺规作图(保留作图痕迹,不写作法),确定点P的位置;
(2)确定点P位置的依据有 .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/36ecb62c-2123-4012-b5f5-52737aa87f78.png?resizew=346)
(1)请在图中利用尺规作图(保留作图痕迹,不写作法),确定点P的位置;
(2)确定点P位置的依据有 .
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在△ABC中,
,D是BC边上的中点,连结AD,BE平分∠ABC交AC于点E,过点E作EF//BC交AB于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/15/cbe183c7-0ae7-4ba5-9703-80ba77f26195.png?resizew=168)
(1)若
,求∠BAD的度数;
(2)求证:点F在BE的垂直平分线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/15/cbe183c7-0ae7-4ba5-9703-80ba77f26195.png?resizew=168)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9666188e21ea5c4b24d5248e87dc7463.png)
(2)求证:点F在BE的垂直平分线上.
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,在等边
ABC中,D为AC上一点,E为AB延长线上一点,DE⊥AC交BC于点F,且CD=BE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/54d90545-66c4-4330-9d71-b373e5015e16.png?resizew=152)
(1)求证:DF=EF.
(2)若AC=18,求BF的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db999650f7f40ac6aaf3ff856ea4ca40.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/54d90545-66c4-4330-9d71-b373e5015e16.png?resizew=152)
(1)求证:DF=EF.
(2)若AC=18,求BF的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
,点
是斜边
的中点,连接
,线段
线段
交
于点
,交
于点
,垂足为点
.
(1)求证:
;
(2)连接
,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/28/3d0400f1-d05d-4c9d-9a00-24fa226b5370.png?resizew=216)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6320654eb1021a8b8dc11028f6c86f08.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122493d1e889d06200caa54aa5941df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef063997544c84aa2681c65909a7a71a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,已知抛物线
经过
、
两点.
![](https://img.xkw.com/dksih/QBM/2019/5/5/2197119698288640/2197615889784832/STEM/091e12c481d6417c94c24f3928a8f6c4.png?resizew=207)
(1)求抛物线的解析式;
(2)将直线OB向下平移m个单位长度后,得到的直线与抛物线只有一个公共点D,求m的值及点D的坐标;
(3)如图,已知点N在抛物线上,且
.
①求出点N的坐标;
②在(2)的条件下,直接写出所有满足
的点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304ddbcf0f583755dcdd8394b3fbee0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2b1f4120365cb6ee4925fe417563f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78b8c8353ed5d9144e451c56afa9607.png)
![](https://img.xkw.com/dksih/QBM/2019/5/5/2197119698288640/2197615889784832/STEM/091e12c481d6417c94c24f3928a8f6c4.png?resizew=207)
(1)求抛物线的解析式;
(2)将直线OB向下平移m个单位长度后,得到的直线与抛物线只有一个公共点D,求m的值及点D的坐标;
(3)如图,已知点N在抛物线上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31d35479633b046c1bfc229c15b2be3.png)
①求出点N的坐标;
②在(2)的条件下,直接写出所有满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26418168c5102d94d4d552a538de1588.png)
您最近一年使用:0次