如图,
中,
,
,
,
是从
点出发的动点,沿着
在三角形边上运动,速度为每秒
.设
点的运动时间为
秒.
中点时,
秒;
(2)当
点在
上运动时,
cm;(用含t的代数式表示)
(3)若存在某一时刻
,使得时间为
秒时
的面积与时间为
秒时
的面积相等,求出此时
的值;
(4)点P运动多少秒时,
为等腰三角形(直接写出答案).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/885fbb85e425a627a51d2aabc4d51b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c062c0592bd84648f63546c83fd1bd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e109b2df4450b1a7a15b94b430b7ece5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0f08eb47a5429245f4c162d0355a45.png)
(3)若存在某一时刻
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c521a7ca379885f5e5ca99f53b8087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ff56352c412c2aa917021628b7f2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f097086fe637a253260ce94ef3dfead6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(4)点P运动多少秒时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147de24f071e316b68fd2e78e3c84545.png)
更新时间:2024-03-12 22:15:13
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相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知直线
:y=mx﹣3m(m≠0)与x轴、y轴分别交于A、B两点,直线
:y=﹣
x+4与y轴交于点C.
![](https://img.xkw.com/dksih/QBM/2021/11/15/2851601139728384/2855929510944768/STEM/1e0753ce-8321-4476-b038-56274a8276db.png)
(1)如图1,若
=6,求A、B两点坐标.
(2)在(1)的条件下,直线
上是否存在点P使得
=
?若存在,求出点P坐标;若不存在,说明理由.
(3)当m为何值时,△ABC为等腰三角形?请直接写出m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://img.xkw.com/dksih/QBM/2021/11/15/2851601139728384/2855929510944768/STEM/1e0753ce-8321-4476-b038-56274a8276db.png)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29aa828f2bd9a5e63ee58dcaa9d0d336.png)
(2)在(1)的条件下,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29aa828f2bd9a5e63ee58dcaa9d0d336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5006ad3a066a4bcd852cbf4ebb04dd.png)
(3)当m为何值时,△ABC为等腰三角形?请直接写出m的值.
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解答题-作图题
|
较难
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【推荐2】如图1,正方形
的边长为4,连接
.动点P从点A出发,以每秒1个单位的速度沿线段
向终点B运动,过点P作
交
于点E.以
为一边向右作正方形
.设点P的运动时间为x秒.正方形
与正方形
重叠部分图形的面积为y.
(1)当
时,
______;
(2)当点F落在
上时,
______;
(3)当
时,在图2中画出图形,并求出y的值;
(4)连接
,当
是等腰三角形时,直接写出
的值.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04fb30a9d07e410ac92c34b8ad0133db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3f1c63921a86b0493c0c6ba5793a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3f1c63921a86b0493c0c6ba5793a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/22/a0753cbc-84c0-48f1-ac98-8b10ae8e17df.png?resizew=292)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
(2)当点F落在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
(4)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐3】(1)问题发现:两个顶角相等的等腰三角形,如果具有公共的顶角的顶点,并把它们的底角顶点连接起来,则形成一组全等的三角形,我们把具有这种规律的图形称为“手拉手”图形,如图1,
和
是顶角相等的等腰三角形,即
,
,且
,分别连接
,
.求证:
;
(2)类比探究:如图2,
和
都是等腰三角形,即
,
,且
,
,
,
在同一条直线上.请判断线段
与
存在怎样的数量关系及位置关系,并说明理由.
(3)问题解决:如图3,若
和
均为等腰直角三角形,且
,
,
,点
,
,
在同一条直线上,
为
中
边上的高,连接
,若
,
,请直接写出四边形
的面积.
![](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/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8abfdaab699cfe51bb9678110ad6aee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
(2)类比探究:如图2,
![](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/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26813466e2ee49a493881a4384fc8748.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(3)问题解决:如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b40c2b0ab8e1cfe5112d428b4b829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaffcd2070bfcb1955e2cab66c26c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc75953bf5dcfa4af308c34bf9952d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271ba591a8451e5066e9181c40c67085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a876bc003f6c042c24ff4d8c11c8a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/68e9e365-7fe7-457d-a2b2-9b663539a726.png?resizew=362)
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名校
【推荐1】直线
和x轴、y轴的交点分别为B、C,点A的坐标是
,另一条直线经过点A、C.
(1)求线段AC所对应的函数表达式;
(2)动点M从B出发沿BC运动,速度为1秒一个单位长度,当点M运动到C点时停止运动,设M运动t秒时,△ABM的面积为S.
①求S与t的函数关系式;
②当t=4的时候,在坐标轴上是否存在点P,使得△BMP是以BM为直角边的直角三角形?若存在,请直接写出P点坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83837cefc88c90a2d7cb8873f642340c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa98b3f5fa18d38292170956357e0754.png)
(1)求线段AC所对应的函数表达式;
(2)动点M从B出发沿BC运动,速度为1秒一个单位长度,当点M运动到C点时停止运动,设M运动t秒时,△ABM的面积为S.
①求S与t的函数关系式;
②当t=4的时候,在坐标轴上是否存在点P,使得△BMP是以BM为直角边的直角三角形?若存在,请直接写出P点坐标,若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2021/9/11/2805943711186944/2806518112976896/STEM/ccfbff55-6baf-4bdb-9a4f-e8892e1b8d48.png)
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(0.4)
【推荐2】在
中,
.
(1)如图1,若
于点
,且
,求
的面积;
(2)在(1)的条件下,如图2,点
是线段
上任意一点,分别过点
、
作直线
的垂线,垂足为
、
,设
,请用含
的代数式表示
,并求
的最大值和最小值;
(3)对给定的一个
值,有时只能确定唯一的点
,直接写出这样的
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5718eacd9aacdd300da2d00b645b05c4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/c70e1cd7-c7d7-48f0-a112-60a98d2beab7.png?resizew=211)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432cce1481829c4dfe2bd557f6e9aa4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)在(1)的条件下,如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.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/bcdae78f4d3b8d8213ac3ac9a9567eb5.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/c2905464416ff9132413df8f886c5be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
(3)对给定的一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次