如图,以直角三角形
的直角顶点O为原点,以
所在直线为x轴和y轴建立平面直角坐标系,点
,
满足
.
(2)已知坐标轴上有两动点P、Q同时出发,P点从C点出发沿x轴负方向以1个单位长度每秒的速度匀速移动,Q点从O点出发以2个单位长度每秒的速度沿y轴正方向移动,点Q到达A点整个运动随之结束.
的中点D的坐标是
,设运动时间为
秒.问:是否存在这样的t,使
,若存在,请求出t的值;若不存在,请说明理由.
(3)点F是线段
上一点,满足
,点G是第二象限中一点,连
,使得
.点E是线段
上一动点,连
交
于点H,试判断
,
和
之间的关系,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed01d1ff5a7f21a68fb3a1e5c7f393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5739e9796473c2a3386a5ad0b2bdce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6991563453cd366d99513c393d1ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc3e7d0852e2224fe6f98dbcf32ba9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a70112b3d28d72a1be70421923483061.png)
(2)已知坐标轴上有两动点P、Q同时出发,P点从C点出发沿x轴负方向以1个单位长度每秒的速度匀速移动,Q点从O点出发以2个单位长度每秒的速度沿y轴正方向移动,点Q到达A点整个运动随之结束.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781b089662bf214668aae489bda55497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a33482b5c998fe8741c0a6ce12ad73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd351396e68d9167cd6a4630c95223f.png)
(3)点F是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a6825c543fedee205e5f4f259fd7ec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f33572d09e272aba93aa17680838e4af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c616a5f3ed27093c204cbb53547706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1526ea86b81faf566b908d58a7d77325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca1951b1fe7ae822684ae2f7a877c8c.png)
更新时间:2024-05-07 21:37:14
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,四边形
为正方形,
轴.已知
,
,
,且
;
(2)点Q从C出发,以每秒1个单位长度的速度延射线
方向运动,运动时间为t秒,
①点P在四边形
内部,且
时,求t的值;
②当
时,求t的值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d931bce6368ba976d026f1f0984ca3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9bce61b0385ba876f309356017b2b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc3e7d0852e2224fe6f98dbcf32ba9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e4f4301eb091d799c569755ecf4d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66120398b62bf90fc1f0db9aff1c2fd5.png)
(2)点Q从C出发,以每秒1个单位长度的速度延射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
①点P在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6217ca5811617d44649a5d62c077c.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fb28ff585cf8d48b9309bad6708b2d.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图,O点是数轴的原点,数轴正半轴上有一点A,已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/d91e45f5-cd81-4d37-b3ce-486a86e9568d.png?resizew=205)
(1)在原点O的左侧画点B,使
(尺规作图,不写作法,保留作图痕迹)
(2)点M,点N同时从原点O出发,点M以每秒3个单位长度的速度沿数轴向左运动,到达点B后立即返回向右运动,点N以每秒1个单位长度的速度沿数轴向右运动.当点M到达点O时,两个点都停止运动.若
时,求t的值;
(3)在以上的条件下,若点M到达点O后继续沿数轴向右运动,点N的运动速度和方向保持不变.在整个运动过程中,若点A,点B,点M,点N到原点O的距离之和是25,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3dfcd8aff269dd5aba398816490c6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/d91e45f5-cd81-4d37-b3ce-486a86e9568d.png?resizew=205)
(1)在原点O的左侧画点B,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2a988dc9f03fffcd8acb720d706e9c.png)
(2)点M,点N同时从原点O出发,点M以每秒3个单位长度的速度沿数轴向左运动,到达点B后立即返回向右运动,点N以每秒1个单位长度的速度沿数轴向右运动.当点M到达点O时,两个点都停止运动.若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7cc44a77f2392abc4cebcae96fbb14.png)
(3)在以上的条件下,若点M到达点O后继续沿数轴向右运动,点N的运动速度和方向保持不变.在整个运动过程中,若点A,点B,点M,点N到原点O的距离之和是25,求t的值.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在
中,
,
,
,若动点P从点A出发,沿着三角形的三边,先运动到点C,再运动到点B,最后运动回到点A,
,设点P的运动时间为ts.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/5c4a07c5-1b39-4f0d-af49-8c55acf1e8ba.png?resizew=197)
(1)当t为何值时,点P恰好在AB的垂直平分线上?
(2)当t为何值时,点P在BC上,且恰好在
的角平分线上?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cd4a1c8087ef697d82b321a3331211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c545764505bb00578a870c5e39493a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7f6df3e20553035f9a30b7a3d61b245.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/5c4a07c5-1b39-4f0d-af49-8c55acf1e8ba.png?resizew=197)
(1)当t为何值时,点P恰好在AB的垂直平分线上?
(2)当t为何值时,点P在BC上,且恰好在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】如图,已知
、
、
是数轴上的三点,点
表示
,点
在点
的左边,与点
的距离是
个单位长度,点
在点
的右边,与点
的距离是
个单位长度.
表示的数是_________,点
表示的数是_________,点
与点
的距离是_________;
(2)甲乙两只蚂蚁分别从
、
同时出发,蚂蚁甲以每秒
个单位长度的速度沿数轴向右匀速运动,蚂蚁乙以每秒
个单位长度的速度沿数轴向左匀速运动,则甲乙两只蚂蚁在数轴上经过_________秒相遇,相遇点所表示的数为_________;
(3)甲乙两只蚂蚁分别从
、
同时出发,蚂蚁甲以每秒
个单位长度的速度沿数轴向右匀速运动,蚂蚁乙以每秒
个单位长度的速度沿数轴向左匀速运动,问经过多少秒时,两只蚂蚁相距
个单位长度?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e78c013cb4fc61193b651072d5e15de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)甲乙两只蚂蚁分别从
![](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/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
(3)甲乙两只蚂蚁分别从
![](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/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图,直角坐标系中,
的顶点都在网格点上,平移
,使点
至点
,
(1)请画出平移后的三角形
.
(2)平移后
、
两点的对应点
、
的坐标为
__________,
__________.
(3)在(1)中则
的面积为__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138506a762e636aa75a4d54f5b739b89.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/15/3b487f6e-558c-45c8-8db4-5273f7fbbb82.png?resizew=230)
(1)请画出平移后的三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)平移后
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
(3)在(1)中则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.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,在平面直角坐标系中,
、
、
,其中
、
是二元一次方程组
的解.
![](https://img.xkw.com/dksih/QBM/2021/7/2/2755740495888384/2803142121693184/STEM/6c19c8c2-2006-449f-9196-1923b4c3a924.png)
(1)请求出
、
、
的坐标,在第一个坐标系中画出三角形
,并求三角形
的面积;
(2)点
是射线
上的一个动点,若点
的横坐标为
,设三角形
的面积为
.
①请用含
的式子表示
.
②当三角形
的面积不大于5时,试求
的取值范围.
(3)点
是射线
上的一个动点,若点
的横坐标为
,设三角形
的面积为
.连接
,点
是线段
上的三等分点,连接
,当三角形
的面积与三角形
的面积相等时,请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af537811effa49af7e815ba552f93c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6b9074a301740ffaa0fd1df8fe4365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92296b438dc6cfd6f20ff2487921491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d3142f753827d2da7ad04d49dfb8b3.png)
![](https://img.xkw.com/dksih/QBM/2021/7/2/2755740495888384/2803142121693184/STEM/6c19c8c2-2006-449f-9196-1923b4c3a924.png)
(1)请求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
①请用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
②当三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfaad4c4467e27421876d8f2a4371d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb802b0cd77d772dceff0d9ff6c879ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
与
相切于点A,
交
于点C,
,
的长为
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26ea9e9e42ced4f9b7540b368fbd171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0a98828cab1d9bd9184aa53750bd6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9fdc1f8ed0ae44b54a9a2a3aca2db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/2f6b3807-9155-416b-b118-6d8dbd4dee84.png?resizew=118)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】如图,AB=AC,D是BC上任意一点,作DE∥AC交AB于点E,DF∥AB交AC于F,四边形AEDF为平行四边形.
![](https://img.xkw.com/dksih/QBM/2020/9/9/2546013404946432/2546317391388672/STEM/e4833d13e9174b978bd3cb0c3f960e51.png?resizew=123)
(1)当点D在BC上运动时,∠EDF的大小是否发生变化?为什么?
(2)当AB=10cm时,求▱AEDF的周长;
(3)通过计算(2),你能否得出类似于(1)的结论?写出你的猜想.
![](https://img.xkw.com/dksih/QBM/2020/9/9/2546013404946432/2546317391388672/STEM/e4833d13e9174b978bd3cb0c3f960e51.png?resizew=123)
(1)当点D在BC上运动时,∠EDF的大小是否发生变化?为什么?
(2)当AB=10cm时,求▱AEDF的周长;
(3)通过计算(2),你能否得出类似于(1)的结论?写出你的猜想.
您最近一年使用:0次