如图,在
中,
,
,
,D,E分别是AB,BC边上的动点,以BD为直径的
交BC于点F.
![](https://img.xkw.com/dksih/QBM/2021/8/18/2788785054744576/2794500446797824/STEM/0c70a74be69046d68a90e97048f6e011.png?resizew=381)
(1)当
时,求证:
;
(2)当
是等腰三角形且
是直角三角形时,求AD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2021/8/18/2788785054744576/2794500446797824/STEM/0c70a74be69046d68a90e97048f6e011.png?resizew=381)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95adbf026e5ad4ce6f123e5e0b89da7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3eda2e1811b039ef9bfecbda4df718.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd75c2244c18120b8fc35d5d309ab66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321370fe42bc1216902ea19fbd2a5979.png)
2021·广西河池·中考真题 查看更多[2]
更新时间:2021-08-26 14:48:37
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相似题推荐
解答题-证明题
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【推荐1】如图,AB是⊙O的直径,C为半径OB上一点,过点C作CD⊥AB,交上半圆于D,连接AD,将线段CD绕D点顺时针旋转90°到ED.
(1)如图1,当点E在⊙O上时,求证:CD=2OC;
(2)如图2,当tanA=
时,连接OE,求sin∠EOC的值.
(1)如图1,当点E在⊙O上时,求证:CD=2OC;
(2)如图2,当tanA=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/27/cd1ea86d-2a77-4fad-bf5f-2c5ec9e80dc2.png?resizew=316)
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【推荐2】综合与实践
问题情境:正方形折叠中的数学
数学活动课上,老师让同学们翻折正方形
进行探究活动,同学们经过动手操作探究,发展了空间观念,并积累了数学活动经验.
问题背景:过点A引射线
,交边
于点H(点H与点D不重合).通过翻折,使点B落在射线
上的点G处,折痕
交
于E,延长
交
于F.如图①.
问题探究:
与
的大小关系是_________;
是_________三角形.
(2)如图②,当点H为边
上任意一点时(点H与点C不重合).连接
,猜想
与
的数量关系,并说明理由.
问题延伸:
(3)若过点A引直线
,交直线
于点H (点H与点D不重合).通过翻折,使点B落在直线
上的点G处,折痕所在直线
交直线BC于E,直线
交直线
于F.连接
,当
,
时,
的长为__________.
问题情境:正方形折叠中的数学
数学活动课上,老师让同学们翻折正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
问题背景:过点A引射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
问题探究:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c333f2e1769473c6ada9790f841572.png)
(2)如图②,当点H为边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
问题延伸:
(3)若过点A引直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f218914337edd06e59e75d90b777e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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【推荐1】已知正方形
的边长为
,点
是对角线
上的一点.
(1)如图①,若点
到
的距离为
,则点
到
的距离为________;
(2)连接
,过点
作
,交
于点
.
①如图②,以
,
为邻边作矩形
.求证:矩形
是正方形;
②如图③,在①的条件下,连接
,求
的值;
③点
恰为
的中点,连接
交
于点
,则
的长=________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(1)如图①,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3f58c56ea4208b11b56a343ea1de26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
①如图②,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
②如图③,在①的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c17d5b76e2dbaaa6e295f0d5dad969b.png)
③点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a16f5621716bfef7a056a3f2712feb4.png)
![](https://img.xkw.com/dksih/QBM/2021/7/1/2754783010832384/2759997610172416/STEM/bdc3e637-52a2-42e2-8821-ca17283762c9.png?resizew=554)
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【推荐2】综合与实践
在△ABC中,BD⊥AC于点D,点P为射线BD上任一点(点B除外),连接AP,将线段PA绕点P顺时针方向旋转α,α=∠ABC,得到PE,连接CE.
![](https://img.xkw.com/dksih/QBM/2021/12/13/2871612153643008/2872253815054336/STEM/e522e88f-4cd7-43aa-993c-d49cee2d13f5.png?resizew=477)
(1)如图1,当BA=BC,且∠ABC=60°时,BP与CE的数量关系是 ,BC与CE的位置关系是
(2)如图2,当BA=BC,且∠ABC=90°时,(1)中的结论是否成立?若成立,请予以证明;若不成立,请说明理由.(请选择图2,图3中的一种情况予以证明或说理)
(3)在(2)的条件下,若AB=8,AP=
,请直接写出CE的长.
在△ABC中,BD⊥AC于点D,点P为射线BD上任一点(点B除外),连接AP,将线段PA绕点P顺时针方向旋转α,α=∠ABC,得到PE,连接CE.
![](https://img.xkw.com/dksih/QBM/2021/12/13/2871612153643008/2872253815054336/STEM/e522e88f-4cd7-43aa-993c-d49cee2d13f5.png?resizew=477)
(1)如图1,当BA=BC,且∠ABC=60°时,BP与CE的数量关系是 ,BC与CE的位置关系是
(2)如图2,当BA=BC,且∠ABC=90°时,(1)中的结论是否成立?若成立,请予以证明;若不成立,请说明理由.(请选择图2,图3中的一种情况予以证明或说理)
(3)在(2)的条件下,若AB=8,AP=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa82a15632a545ce2cc6dc998899807.png)
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【推荐1】
中,点E是线段
延长线上的一个动点,连接
,过点A作
交射线
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/18/bce3f3ee-95ec-4288-b729-0d2963d51bec.png?resizew=493)
(1)如图1,若四边形
是正方形,写出
与
之间的数量关系:_____;(直接写出结论)
(2)如图2,若四边形
是矩形,且
,试判断
与
之间的数量关系,写出结论并证明;
(3)如图3,若四边形
是菱形,且
,过点A作
于点E,过点A作
,交过D点与
垂直的直线干点F、且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ed934aa29859e93b1f758229a12581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/18/bce3f3ee-95ec-4288-b729-0d2963d51bec.png?resizew=493)
(1)如图1,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)如图2,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94f9daede9287a3da7c8c7e00c1513a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(3)如图3,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad6f8846d4294ae3789a6ddd17af5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70abed7faf55deb24162255c5ad59577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466b51bd3a906588faf3b7f2c32f53c5.png)
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真题
【推荐2】已知AC,EC分别为四边形ABCD和EFCG的对角线,点E在△ABC内,∠CAE+∠CBE=90.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/05406198-c698-4730-9997-547236ca4b72.png?resizew=474)
(1)如图①,当四边形ABCD和EFCG均为正方形时,连接BF.
i)求证:△CAE∽△CBF;
ii)若BE=1,AE=2,求CE的长;
(2)如图②,当四边形ABCD和EFCG均为矩形,且
时,若BE=1,AE=2,CE=3,求k的值;
(3)如图③,当四边形ABCD和EFCG均为菱形,且∠DAB=∠GEF=45°时,设BE=m,AE=n,CE=p,试探究m,n,p三者之间满足的等量关系.(直接写出结果,不必写出解答过程)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/05406198-c698-4730-9997-547236ca4b72.png?resizew=474)
(1)如图①,当四边形ABCD和EFCG均为正方形时,连接BF.
i)求证:△CAE∽△CBF;
ii)若BE=1,AE=2,求CE的长;
(2)如图②,当四边形ABCD和EFCG均为矩形,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31e8b682805a55c35433dc7c94251df.png)
(3)如图③,当四边形ABCD和EFCG均为菱形,且∠DAB=∠GEF=45°时,设BE=m,AE=n,CE=p,试探究m,n,p三者之间满足的等量关系.(直接写出结果,不必写出解答过程)
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名校
【推荐3】定义:有两个内角和为
的三角形为“美好三角形”.
①有一个角为
的直角三角形;( )
②有一个角为
的直角三角形;( )
③有一个角为
的三角形;( )
(2)如图①,直线:
与双曲线:
相交于点M,点N在x的正半轴上,若
是“美好三角形”,求出此时点N的坐标;
(3)如图②,二次函数:
的顶点为A,与x轴交于B,C两点,D在
内部,连接
,当
均为“美好三角形”,此时
的面积为
,
的面积为
,
的面积为
,当
时,求
和
的表达式(用含m的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
①有一个角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
②有一个角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
③有一个角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cde7aace5b888a1a1c26fb911e2f49.png)
(2)如图①,直线:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ebd1e91be8f6f55a6ff243e328afe8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90890fb829fc21fc1d827aecec597fc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066ea7c8dac31105aadedad5f34d93fa.png)
(3)如图②,二次函数:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a82299b177fc9a55b6dd253b0d8a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4d7a89ec21ca7c0660f142a9070130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f517953a21c2a45fd8465072c44bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c25aec1ed0eeb7c7f6c0531f6ead02fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
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解答题-问答题
|
较难
(0.4)
【推荐1】如图,直线
与
轴、
轴分别交于
、
两点,抛物线
过
、
两点.
(1)求抛物线的解析式;
(2)点
为抛物线上位于
上方的一点,过点
作
于点
,作
轴交
于点
,当
的周长最大时,求点
的坐标;
(3)
是平面内的一点,在(2)的条件下,将
绕点
顺时针旋转
得到
,当
时,
的两个顶点恰好落在抛物线上,求点
的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf826d99a77a21abdd4f1c2e3a18faba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/21367ccdf5fd1920fc26b0f00d00724c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/465767c7-1c64-437b-82b7-d2cbbdfdd0d1.png?resizew=200)
(1)求抛物线的解析式;
(2)点
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa86966921533ba3934d85aaf29ccb33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf1c5eb81b252c151d4bb5be7fe3671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82173892adae21d8c9fe804290a17a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf1c5eb81b252c151d4bb5be7fe3671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
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解答题-问答题
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较难
(0.4)
解题方法
【推荐2】如图,已知抛物线
与x轴交于A、B两点,与y轴交于点C,O是坐标原点,已知点B的坐标是
,
;
(2)点P在x轴上方的抛物线上,且
,求点P的坐标;
(3)点D是y轴上一动点,若以D、C、B为顶点的三角形与
相似,求出符合条件的点D的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358e2987096a67189bcc2a642da39524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf457459e1b006052117eb3151f7cf39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22976c31ce7d820fb5c343af0fcfec57.png)
(2)点P在x轴上方的抛物线上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ee6ab92655d61f1d14236d5c2d909a5.png)
(3)点D是y轴上一动点,若以D、C、B为顶点的三角形与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次