将两个能完全重合的等腰直角三角板
按图①所示的位置放置,其中
,边
在同一条直线上,点A与点F重合,点E与点B在点
的两侧.现将三角板
沿射线
方向平移,如图②所示,在平移的过程中始终保持边
在同一条直线上,平移至点F和点B重合时停止运动.设平移的距离为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/98bf54ef-3139-4236-a5ce-682618686d49.png?resizew=566)
(1)
________
;
(2)当
________
时,点C落在边
上;当
________
时,点C落在边
上;
(3)设在平移的过程中,两个三角板重合部分的图形的面积为
,求出S关于x的函数关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54306d944af60ce1b6c6fa299fa462dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66db4d2b97f2af8a14cecb0604c5db84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4285fcd45e475c0f5c6389980595a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb46ca887d7035d68828f33e84785ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4285fcd45e475c0f5c6389980595a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67ffdd759ca715286ed7d7d5d764ec8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/98bf54ef-3139-4236-a5ce-682618686d49.png?resizew=566)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)设在平移的过程中,两个三角板重合部分的图形的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab9091bc1886a3fd3d17160b2d41ded.png)
更新时间:2023-03-11 18:14:51
|
相似题推荐
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】如图,在平面直角坐标系
中,已知直线
与
轴交于点
,与
轴交于点
,过
、
两点的抛物线
与
轴交于另一点
,抛物线对称轴为直线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/6561d7cd-de2e-45f5-bdb2-63873915e583.png?resizew=169)
(1)求抛物线的解析式;
(2)点
为直线
下方抛物线上一点,当
的面积最大时,求点
的坐标;
(3)点
是抛物线上的点,过点
作
的垂线,垂足为
,
是
上的点.要使得以
、
、
为顶点的三角形与
全等,请求出点
、点
的坐标;
(4)在(2)的条件下,点
为
轴上一点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8652faaf1560a7914b30fe8c3d7a7c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b47e7bf02b3ca16f7d96b9369e51a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/6561d7cd-de2e-45f5-bdb2-63873915e583.png?resizew=169)
(1)求抛物线的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40c49d6e2fc6fbdc21ff61841b586a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/2a30f3a8b673cc28bd90c50cf1a35281.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(4)在(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549bd202f9f53f6e8e812a862a083d13.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】有两个直角三角形,在△ABC中,∠ACB=90°,AC=3,BC=6,在△DEF中,∠FDE=90°,DE=DF=4.将这两个直角三角形按图1所示位置摆放,其中直角边
在同一直线
上,且点
与点
重合.现固定
,将
以每秒1个单位长度的速度在
上向右平移,当点
与点
重合时运动停止.设平移时间为
秒.
![](https://img.xkw.com/dksih/QBM/2014/1/22/1573701107433472/1573701113970688/STEM/018874c179d54471a65c379e1167e855.png)
(1)当
为 秒时,
边恰好经过点
;当
为 秒时,运动停止;
(2)在
平移过程中,设
与
重叠部分的面积为
,请直接写出
与
的函数关系式,并写出
的取值范围;
(3)当
停止运动后,如图2,
为线段
上一点,若一动点
从点
出发,先沿
方向运动,到达点
后再沿斜坡
方向运动到达点
,若该动点
在线段
上运动的速度是它在斜坡
上运动速度的2倍,试确定斜坡
的坡度,使得该动点从点
运动到点
所用的时间最短.(要求,简述确定点
位置的方法,但不要求证明.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b6cd600b64a780a3302d31b5389e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/9fa2e99edada1ee443e6ab85657b5dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/2014/1/22/1573701107433472/1573701113970688/STEM/018874c179d54471a65c379e1167e855.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa2e99edada1ee443e6ab85657b5dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2014/1/22/1573701107433472/1573701113970688/STEM/09ed4900bc6d4c6e9207f94ef0055e34.png)
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【推荐1】如图,在矩形ABCD中,E是AD上的一点,沿CE将△CDE对折,点D刚好落在AB边的点F上.
(1)求证:△AEF∽△BFC.
(2)若AB=20cm,BC=16cm,求tan∠DCE.
(1)求证:△AEF∽△BFC.
(2)若AB=20cm,BC=16cm,求tan∠DCE.
![](https://img.xkw.com/dksih/QBM/2020/10/2/2562189264232448/2565366487769088/STEM/75bd482857ea4d0e9645bbef1bed4ca0.png?resizew=147)
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【推荐2】如图,直线MN与⊙O相离,OA⊥MN于点A,与⊙O相交于点P,AB切⊙O于点B,连接BP并延长,交直线MN于点C.
![](https://img.xkw.com/dksih/QBM/2022/3/19/2939632284606464/2941030059581440/STEM/30b23db9833142f0a2aeb4dc23365e22.png?resizew=141)
(1)判断△ABC的形状,并说明理由;
(2)若tan∠ACB
,⊙O的半径为10.求线段BP的长.
![](https://img.xkw.com/dksih/QBM/2022/3/19/2939632284606464/2941030059581440/STEM/30b23db9833142f0a2aeb4dc23365e22.png?resizew=141)
(1)判断△ABC的形状,并说明理由;
(2)若tan∠ACB
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50a39604477d1d9326eb455cda2e838.png)
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【推荐1】如图,已知正方形ABCD的边长是5,点E在DC上,将△ADE经顺时针旋转后与△ABF重合.
(1)指出旋转的中心和旋转角度;
(2)如果连接EF,那么△AEF是怎样的三角形?请说明理由;
(3)△ABF向右平移后与△DCH位置,平移的距离是多少?
(4)试猜想线段AE和DH的数量关系和位置关系,并说明理由.
(1)指出旋转的中心和旋转角度;
(2)如果连接EF,那么△AEF是怎样的三角形?请说明理由;
(3)△ABF向右平移后与△DCH位置,平移的距离是多少?
(4)试猜想线段AE和DH的数量关系和位置关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/2017/7/24/1737276029837312/1738701502201856/STEM/7d02cdd4d48043c1b4cd1ec0e7676c79.png?resizew=175)
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【推荐2】如图,在
中,
点D,
,点P从点B出发,在线段
上以每秒3cm的速度向点C匀速运动,与此同时,垂直于
的直线m从底边
出发,以每秒2cm的速度沿
方向匀速平移,分别交
于E、F、H,当点P到达点C时,点P与直线m同时停止运动,设运动时间为t秒(t>0).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/a42f2851-9d1d-4bd6-8db6-10f74e3a1f53.png?resizew=332)
(1)当
时,连接
,求证:四边形
为菱形;
(2)用t在整个运动过程中,所形成的
的面积是
,求线段
的长;
(3)是否存在某一时刻t,使
为直角三角形?若存在,请求出此时刻t的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cf656f09718fcc3f0eee931713a719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb578f2a21b7ab9b8bf6e04a5e833516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad50484ce9580edd9aa74e147044cce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/a42f2851-9d1d-4bd6-8db6-10f74e3a1f53.png?resizew=332)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbeede118c407a800b05757b9a1393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898c28dfb320453e7819bc24373f2995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a61d8bedef61745ee4fd89a8c0c119.png)
(2)用t在整个运动过程中,所形成的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9829733240df90d85e5349c3dc5985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
(3)是否存在某一时刻t,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
您最近一年使用:0次