如图所示,在平面直角坐标系
中,已知点
的坐标
,过
点作
轴,垂足为点
,过点
作直线
轴,点
从点
出发在
轴上沿着轴的正方向运动.
![](https://img.xkw.com/dksih/QBM/2020/4/16/2442706605957120/2442779472117760/STEM/832cf24ec30f43e3b9572201d3c39072.png?resizew=460)
(1)当点
运动到点
处,过点
作
的垂线交直线
于点
,证明
,并求此时点
的坐标;
(2)点
是直线
上的动点,问是否存在点
,使得以
为顶点的三角形和
全等,若存在求点
的坐标以及此时对应的点
的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b85e56104dd18b4a0c78e05face504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24624dffd30b66a5e4de57362b32b2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134fc3507b06c25a6cdf06b7ae11f055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165a501b2e6a3acc46212e59a166c053.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/2020/4/16/2442706605957120/2442779472117760/STEM/832cf24ec30f43e3b9572201d3c39072.png?resizew=460)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d057c8a707abd8d2e07e3b0fbbf8b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1a558c66b1b558c507abef358e2e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2694c32ca1e120e988012b7ecd74f625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
更新时间:2020-04-16 16:30:28
|
相似题推荐
解答题-问答题
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较难
(0.4)
【推荐1】(1)问题发现
如图1,△ABC和△DCE都是等边三角形,点B、D、E在同一直线上,连接AE.
填空:
①∠AEC的度数为 ;
②线段AE、BD之间的数量关系为 .
(2)拓展探究
如图2,△ABC和△DCE都是等腰直角三角形,∠ACB=∠DCE=90°,点B、D、E在同一直线上,CM为△DCE中DE边上的高,连接AE.试求∠AEB的度数及判断线段CM、AE、BM之间的数量关系,并说明理由.
(3)解决问题
如图3,在正方形ABCD中,CD=2,点P在以AC为直径的半圆上,AP=1,①∠DPC= °; ②请直接写出点D到PC的距离为 .
如图1,△ABC和△DCE都是等边三角形,点B、D、E在同一直线上,连接AE.
填空:
①∠AEC的度数为 ;
②线段AE、BD之间的数量关系为 .
(2)拓展探究
如图2,△ABC和△DCE都是等腰直角三角形,∠ACB=∠DCE=90°,点B、D、E在同一直线上,CM为△DCE中DE边上的高,连接AE.试求∠AEB的度数及判断线段CM、AE、BM之间的数量关系,并说明理由.
(3)解决问题
如图3,在正方形ABCD中,CD=2,点P在以AC为直径的半圆上,AP=1,①∠DPC= °; ②请直接写出点D到PC的距离为 .
![](https://img.xkw.com/dksih/QBM/2018/9/4/2025140503871488/2025994475388928/STEM/7aa1193eeee048e88bae93da69b80114.png?resizew=491)
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解答题-证明题
|
较难
(0.4)
【推荐1】如图,四边形ABCD是菱形,∠ABC=60°,AB=10,连接BD,点P是BC上的点,连接AP,交BD于点E,连接EC
(1)求证:△ABE≌△CBE;
(2)求菱形ABCD的面积;
(3)当点P在线段BC的延长线上时,是否存在点P,使得△PEC是直角三角形?若存在,求出BP的长;若不存在,请说明理由.
(1)求证:△ABE≌△CBE;
(2)求菱形ABCD的面积;
(3)当点P在线段BC的延长线上时,是否存在点P,使得△PEC是直角三角形?若存在,求出BP的长;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2020/10/9/2567244231368704/2567470719188992/STEM/2e2d7cd86110431eb5f1af2f54a502ae.png?resizew=326)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】【问题背景】如图1,己知
和
都是等边三角形,求证:
:
【尝试应用】如图2,在
中,
,在
上截取
,连接
,D为
上一点,将线段
绕点B逆时针旋转
,得到线段
,连接
并延长交线段
于点M,且
,求证:点D为线段
的中点:
【拓展探究】如图3,在
中,
,点D为边
上的一点,当
时,连接
,将线段
绕点B逆时针旋转
,得到线段
,连接
,若
,请直接写出
面积的最大值为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
【尝试应用】如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14833dbeed409b33acd4c9071fd0be36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a0df5c5dbb25fef935574942b32954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
【拓展探究】如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb6694f3443cc5f4d09948679251b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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