如图,在平面直角坐标系中,正方形
的顶点O与坐标原点重合,点A的坐标
,点C在x轴正半轴上,点E从A出发以每秒1个单位长度向B运动,点F从C出发以每秒2个单位长度向O运动,当点F运动到点O时,点E也随之停止运动.设运动的时间为t秒.
为直径的圆与
相切时,求t的值;
(2)求证:在E、F的运动过程中,直线
过定点,记为点Q,并求出定点Q的坐标;
(3)在(2)的条件下,将
沿
翻折,得
,(点C的对应点是点
),当
是直角三角形时,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88a1f304d24f867811ff75447f50f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求证:在E、F的运动过程中,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)在(2)的条件下,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2d16438549a3008189e8112c624eee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8db072e2b6104671b82f948012fb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b1d0b5a8cd3eb137cd6de0903d814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ca6e3b489a57fd006f769e997558f5.png)
更新时间:2024-04-29 22:54:13
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相似题推荐
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【推荐1】如图
,直线
与直线
交于点
,直线
与
轴交于点
,与
轴交于点
.
(1)求直线
的函数表达式;
(2)点
在直线
上,当
的面积为
面积的
时,求点
坐标;
(3)如图
,已知点
,点
在直线
上,点
在直线
上,若
是以点
为直角顶点的等腰直角三角形,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be06299fc124d12d1ab40e25ba9a455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1249a960fb84711dc0197826fc54dac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978afb1da6f1fec85e2b09eeb7ee6403.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/934e69d7-d705-419d-9446-14f7c8279327.png?resizew=306)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dddb32a7a5c157fdf8aa049b2d665b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6b1ca85ab21ca36d4e4893411119a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129f1d6567bef09b00b7f37894e6dba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129f1d6567bef09b00b7f37894e6dba7.png)
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【推荐2】如图,在平面直角坐标系中,直线y=﹣x+8分别交两轴于点A、B,点C的横坐标为4,点D在线段OA上,且AD=7.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/4/f2f4685c-d7ac-4ac5-88b6-3990aff78c4f.png?resizew=140)
(1)求点D的坐标;
(2)求直线CD的解析式;
(3)在平面内是否存在这样的点F,使以A、C、D、F为顶点的四边形为平行四边形?若存在,请求出点F的坐标;若不存在,不必说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/4/f2f4685c-d7ac-4ac5-88b6-3990aff78c4f.png?resizew=140)
(1)求点D的坐标;
(2)求直线CD的解析式;
(3)在平面内是否存在这样的点F,使以A、C、D、F为顶点的四边形为平行四边形?若存在,请求出点F的坐标;若不存在,不必说明理由.
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名校
【推荐1】问题提出
(1)如图1,
为⊙O的弦,
,点
是⊙O上的一个动点,且
,则
的最大值为 ;
(2)如图2,在矩形
中,
,
,以
为斜边在矩形外部作直角三角形
,
为
的中点,求
的最大值;
(3)如图3,老李家有一正方形花园
,他想对其进行设计改造,种植对称的植物,使得整个花园呈现出一种平衡和谐的感觉.在正方形
中,
米,
边上有两个点
、
,使得
,连接
、
.在
与
区域种植花卉,
是花园内一条小路,与
交汇于点
,在点
处设计一个凉亭.连接
,交
于点
,在
处设计一口水井.老李想在
与
之间铺设条笔直的水管,为了节约成本,要求
的长度尽可能的小,问
的长度是否存在最小值?若存在,求出
长度的最小值;若不存在,请说明理由.
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392b9e1a179a6676362679354a9e7e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)如图2,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcf05aaa351239448a9ab0e048f76faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)如图3,老李家有一正方形花园
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbb91d806e628cf978557ffad6a7020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/6ff56ea00ca90825f3d95809de24f639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3064b70f24e9bbcab76e0dc61274b9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3064b70f24e9bbcab76e0dc61274b9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3064b70f24e9bbcab76e0dc61274b9b.png)
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【推荐2】如图,正方形ABCD中,E为AB边上一点,过点D作DF⊥DE,与BC延长线交于点F.连接EF,与CD边交于点G,与对角线BD交于点H.
(1)若BF=BD=
,求BE的长;
(2)若∠ADE=2∠BFE,求证:FH=HE+HD.
(1)若BF=BD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(2)若∠ADE=2∠BFE,求证:FH=HE+HD.
![](https://img.xkw.com/dksih/QBM/2018/5/2/1936636642746368/1937435988877312/STEM/3f2a98a46d9147fc88a839ef0fac190e.png?resizew=160)
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【推荐1】如图,在
中,
,D是
的中点,
经过A、B、D三点,
的延长线交
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/21/4e1972ff-528c-4da2-a97f-61d7b1964859.png?resizew=140)
(1)求证:
;
(2)
与
相切于点E,交
的延长线于点F,若
,求
的直径;
(3)在(2)的条件下,若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/21/4e1972ff-528c-4da2-a97f-61d7b1964859.png?resizew=140)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553a93e0b6156befa00b50bdfaef95d9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd02e71cdbee9a36fa697e3b9168afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d55e5294e8d5332a027d5ef8cdd0b91c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf01cce24cae39fa27acb2d0d7c5f4c5.png)
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解题方法
【推荐2】如图1,二次函数y=ax2+bx+c(a≠0)的图象交x轴于A(﹣1,0)、B(3,0)两点,交y轴于点C(0,﹣3),点D为该二次函数图象顶点.
(1)求该二次函数解析式,及D点坐标;
(2)点P是抛物线的对称轴上一点,以点P为圆心的圆经过A、B两点,且与直线CD相切,求点P的坐标;
(3)如图2,若M为线段BC上一点,且满足S△AMC=S△AOC,点E为直线AM上一动点,在x轴上是否存在点F,使以点F、E、B、C为顶点的四边形为平行四边形?若存在,请直接写出点F的坐标,若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/11/8ba56228-ac60-433d-a93f-e44be585554b.png?resizew=311)
(1)求该二次函数解析式,及D点坐标;
(2)点P是抛物线的对称轴上一点,以点P为圆心的圆经过A、B两点,且与直线CD相切,求点P的坐标;
(3)如图2,若M为线段BC上一点,且满足S△AMC=S△AOC,点E为直线AM上一动点,在x轴上是否存在点F,使以点F、E、B、C为顶点的四边形为平行四边形?若存在,请直接写出点F的坐标,若不存在,请说明理由.
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【推荐1】如图,已知
,它们依次交直线
,
,
,于点A、B、C和点D、E、F,
,
.
(1)求AB、BC的长;
(2)当
,
时,求BE的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b113623224457d17149ec2b8668072.png)
![](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/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ff515a8e4d914bcfbe9dae34b72ada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
(1)求AB、BC的长;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9113ae1ee602a3dadc19b8c65b38f4b0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/9e17805e-90fe-4648-833b-0927b7d2dd3a.png?resizew=136)
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【推荐2】如图,在
中,
,
平分
交
于点
,点
在
上,
.
(1)求证:
是
的外接圆的切线;
(2)若
,
,求
的长.
![](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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0f36da316b9135bc81761e57ef8d3f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4746df85049d1651d3f6c30212a7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb6823a329628699619a39cde927510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/97ce33fa-b8fc-45ec-ad52-2bc623708dd5.png?resizew=208)
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