在矩形
中,
,点P,Q是分别在射线
上,
.将线段
绕点P逆时针旋转
得到
.
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719628093177856/2736362150576128/STEM/c8d2c61e-9c11-4289-b8f9-90075911b4fb.png)
(1)如图1,点P在线段
上,若点E在
上,P,Q在直线
异侧,求
的长.
(2)如图2,点Q在线段
上,若
,求
的长.
(3)△DPE能否是以P为直角顶点的直角三角形?若能,求出线段
的长;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f1844834ef0315a704d8e2fba77544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1f94af7f35686f4a8a268392abc9ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7341c7d3b742bf451457145206782711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719628093177856/2736362150576128/STEM/c8d2c61e-9c11-4289-b8f9-90075911b4fb.png)
(1)如图1,点P在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
(2)如图2,点Q在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15eaf2463001430578cc876c3dd5219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
(3)△DPE能否是以P为直角顶点的直角三角形?若能,求出线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
2021·浙江金华·一模 查看更多[2]
更新时间:2021-06-05 11:25:57
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相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图1,已知在
中,
,
cm,
cm.点
由
出发沿
向点
匀速运动,同时点
由
出发沿
方向向点
匀速运动,它们的速度均为
cm/s.以
为边作平行四边形
,连接
,交
于点
.设运动的时间为
(单位
)(
).解答下列问题:
(1)用含有
的代数式表示
___________
(2)如图1,当
为何值时,平行四边形
为矩形?
(3)如图2,当
为何值时,平行四边形
为菱形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96d9e134e1820d80612be1bc590993e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1999f030de4b2bc56f1eddc165a648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/4c43f3f0389e0786b2dedeb1f255b636.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2aa9b9894a953c812b52eba95559f33.png)
(1)用含有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd64a51dc0617e5e1e5dd61f80bbe35.png)
(2)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b913152c0684df7aa1f91957f706d6c5.png)
(3)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b913152c0684df7aa1f91957f706d6c5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/d2873d27-e0e2-4c13-89d8-e843e94620c6.png?resizew=423)
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解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】如图,在矩形ABCD中,AB=3,BC=2,点A的坐标为(1,0),以CD为直径,在矩形ABCD内作半圆,点M为圆心.设过A、B两点抛物线的解析式为y=ax2+bx+c,顶点为点N.
(1)求过A、C两点直线的解析式;
(2)当点N在半圆M内时,求a的取值范围;
(3)过点A作⊙M的切线交BC于点F,E为切点,当以点A、F,B为顶点的三角形与以C、N、M为顶点的三角形相似时,求点
的坐标.
(1)求过A、C两点直线的解析式;
(2)当点N在半圆M内时,求a的取值范围;
(3)过点A作⊙M的切线交BC于点F,E为切点,当以点A、F,B为顶点的三角形与以C、N、M为顶点的三角形相似时,求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/2021/1/7/2631097003769856/2681127438114816/STEM/4da76a36-7039-4c78-a0e2-2d0632cd9f2c.png)
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解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知,动点
在抛物线
上.
(1)若点
的坐标为
,求
的值;
(2)若该抛物线上任意不同两点
,
都满足:当
时,
,当
时,
.点
在
轴上,以线段
为直径作
,当
交线段
于点
时,
.
①求抛物线的解析式;
②若直线
被
所截得的弦长为定值,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0e588d62ab48ae3dd7740fdb40c1b6.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b36a0866ec5fbb94e6cf4d61579e0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
(2)若该抛物线上任意不同两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8198c3b302b3820e86763428eb1e91cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3463ced6030af957f13f9ba05b977c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65cee351c7053fc8f689c4f7cc7a64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1080669e2f00bdab273c443198f42e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28567f5fd72cd79a5a0b383a7ede51ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a54b5669e303d494def8a29bbb9c74e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0be423239e0c0e2086832c74642c1a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dad3016a7ef2d52f20ff7c530d12036.png)
①求抛物线的解析式;
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ff39dd1dfc9caf911ad0d11ba21d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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解答题-证明题
|
较难
(0.4)
【推荐2】已知,点D在
的边
上,连接
.
(1)如图1,若
.求证:
;
(2)如图2,若
,
,
,
.求线段
的长;
(3)如图3,M、N分别是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
上的两点,连接
交
于点P,当
,
时,若
,直接写出
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/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/a24984a5-8341-4d45-8206-bf9f9b0e43e6.jpg?resizew=364)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb576337b81841d9f1924c8b45c23aba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2674162368fd49dc195ba7d3e07bee5.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432cce1481829c4dfe2bd557f6e9aa4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194a2857b5c2b423f77a06512d2ed83f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(3)如图3,M、N分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49eefd4471713ab7de8a59ec283d49e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a7049a6e7d051c2522712926399261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c5f14eaf95c878836c4f6c9440a52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ace55afd9133f5fe7577a785402d8ea.png)
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较难
(0.4)
【推荐3】如图,平面直角坐标系中,抛物线y=ax2+bx+3与x轴分别交于A(﹣1,0),B两点,与y轴交于点C,直线y=﹣x+n经过B、C两点.点D为第一象限内抛物线上一动点,过点D作DE∥y轴,分别交x轴,BC于点E,F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/75d0f4ec-7949-43bb-b034-2a3d78a4a913.png?resizew=337)
(1)求直线BC及抛物线的表达式;
(2)点D在移动过程中,若存在∠DCF=∠ACO,求线段DE的长;
(3)在抛物线上取点M,在坐标系内取点N,问是否存在以C、B、M、N为顶点且以CB为边的矩形?如果存在,请直接写出点M的坐标;如果不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/75d0f4ec-7949-43bb-b034-2a3d78a4a913.png?resizew=337)
(1)求直线BC及抛物线的表达式;
(2)点D在移动过程中,若存在∠DCF=∠ACO,求线段DE的长;
(3)在抛物线上取点M,在坐标系内取点N,问是否存在以C、B、M、N为顶点且以CB为边的矩形?如果存在,请直接写出点M的坐标;如果不存在,请说明理由.
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