如图,点C为△ABD外接圆上的一动点(点C不在
上,且不与点B,D重合),∠ACB=∠ABD=45°.
,三者之间满足的等量关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6ffb78dad3375efa3b08ab518553d.png)
(2)连结CD,求证:AC=BC+CD;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0454210df4528426174815bc3df341.png)
2016·广东广州·中考真题 查看更多[17]
2016年初中毕业升学考试(广东广州卷)数学2017-2018学年上学期苏州市张家港梁丰初中初三数学期末综合检测(已下线)2年中考1年模拟 第七篇 专题复习篇 专题38 开放探究问题(已下线)决胜2018中考压轴题全揭秘 专题17 圆问题(已下线)决胜2018中考压轴题全揭秘 专题28 探究型问题江苏省扬州市扬州中学教育集团树人学校2019-2020学年九年级上学期12月月考数学试题江苏省扬州市广陵区树人中学2019-2020学年九年级第二次月考数学试题江苏省阜宁县实验初中2020-2021学年九年级上学期第一次月考数学试题江苏省高邮市车逻中学2020-2021学年九年级上学期期末数学试题(已下线)2.4 圆周角-2021-2022学年九年级数学上册链接教材精准变式练(苏科版)广东省广州市执信中学2021-2022学年九年级上学期期中数学试题(已下线)第24章 圆(基础、常考、易错、压轴)分类专项训练-2022-2023学年九年级数学考试满分全攻略(人教版)广东省广州市江南外国语学校2022-2023学年九年级上学期期末考试数学试题广东省东莞市东华初级中学2023-2024学年九年级上学期期中模拟数学试题(已下线)期末真题必刷压轴60题(25个考点专练)-2023-2024学年九年级数学上学期期末考点大串讲(人教版)(已下线)广东省广州市番禺区广东仲元中学附属学校2023-2024学年九年级下学期月考数学试题(已下线)数学-2024年中考考前最后一课(9)
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相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】在
中,
,点P是平面内不与点A,C重合的任意一点.连接
,将线段
绕点P逆时针旋转α得到线段
,连接
,
,
.
,点P在
内部时,探索
与
之间的数量关系,并说明理由;
(2)如图2,当
时,求
的值及直线
与直线
相交所成的较小角的度数;
(3)当
时,若点E,F分别是
,
的中点,点P在直线
上,当点C,P,D在同一直线上时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0efdd4d0ca25d68ef7bc0432f2f5cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d48943db264c08adaf6ae0766fd56459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf714ffb3fd5917a76b191640b55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac762a2899a58faa0d3ab44f1281fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a9746e5dc91718774788551c824ac61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac762a2899a58faa0d3ab44f1281fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b49022a6f55817b5d7e3ab443b5491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971b23e3ee827018557d6c88edd5369a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9177a88d6ce68c84a63dd26224ab5bc8.png)
您最近一年使用:0次
解答题-证明题
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名校
【推荐2】(1)如图1,分别以
的边
为腰往外部作等腰三角形,使
,且
,连接
,找出图中的全等三角形,并说明理由;
(2)如图2,
中,
,分别以
的边
为腰往外部作等腰直角三角形,使
,且
,连接
,求
的长;
(3)如图3,
,
是
的垂直平分线上一点,
,则
______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7c39c533e689332ca81c79a7fc38cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5cc2450dc300ce26b513c2abae28cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a1465fd3835e3907212e120665656c.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f624e0c4ff6c0581c8debc3c0dbd9e32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dc62e10004e73908091338362917da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7c39c533e689332ca81c79a7fc38cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26891f01df7816ca874413643fff81a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a1465fd3835e3907212e120665656c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b60cd09dd92ce7f54018977179ebd16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
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【推荐3】【问题提出】在一节数学课上,王老师提出了一个数学问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/28/b7dcd0b5-9397-4511-b051-ed6b470e9099.png?resizew=429)
如图1-1,在等边三角形ABC内部有一点P,PA=5,PB=12,PC=13,求∠APB的度数.
(1)【问题探究】针对这个问题,某学习小组进行了如下尝试:如图1-2,将△APB绕点A逆时针旋转60°得到
,连接
,得到等边
.请根据该小组探究的思路求出∠APB的度数;
(2)【类比延伸】在等腰Rt△ABC中,已知∠BAC=90°,AB=AC,其内部有一点P.如图2,连接PA,PB,PC,若∠APC=135°,试判断线段PA,PB,PC之间的数量关系,并说明理由;
(3)如图3,连接PA,PC,以PC为直角边作等腰Rt△PCQ,∠CPQ=90°,连接BQ,取BQ的中点M,连接AM,PM,试判断
是否为定值,若为定值,请求出相应的值;若不是定值,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/28/b7dcd0b5-9397-4511-b051-ed6b470e9099.png?resizew=429)
如图1-1,在等边三角形ABC内部有一点P,PA=5,PB=12,PC=13,求∠APB的度数.
(1)【问题探究】针对这个问题,某学习小组进行了如下尝试:如图1-2,将△APB绕点A逆时针旋转60°得到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d0f53af0839b0f803e470f0cf42c90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a99e1ad0d6fb0f13be56d09086366c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2f90f1f950f19b10ee0b1852cec730.png)
(2)【类比延伸】在等腰Rt△ABC中,已知∠BAC=90°,AB=AC,其内部有一点P.如图2,连接PA,PB,PC,若∠APC=135°,试判断线段PA,PB,PC之间的数量关系,并说明理由;
(3)如图3,连接PA,PC,以PC为直角边作等腰Rt△PCQ,∠CPQ=90°,连接BQ,取BQ的中点M,连接AM,PM,试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e2af991e3fa6067ae8756ab754cd10.png)
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(0.4)
【推荐1】(1)问题发现:如图1,
和
都是等边三角形,连接
、
,延长
交
于点
,求证:
,
;
(2)类比探究:如图2,
和
都是等腰直角三角形,即
,
,
,则
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:若
和
都是等腰三角形,且
,
,
,请直接写出线段
和
的数量关系及它们所在直线的夹角.
![](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/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ecfdd83321a6e877011cad55b1ec56.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(3)问题解决:若
![](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/8b63c97140963ac5b6bf8f584148cf0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/040f525a-57e4-44dc-8a5b-7dece94605d4.png?resizew=408)
您最近一年使用:0次
解答题-问答题
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【推荐2】如图1,已知直线
与
相交于点O,
平分
,点G在射线
上,点F在射线
上,且
,
交
于点P,若
,
.
(1)求
与
的面积之比;
(2)比较
与
的大小并说明理由;
(3)如图2,当点M在线段
上,点N在射线
上,且
,试问
的值是否为定值;如果是,求出这个值;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43dad1f58af0e8cb85dd1bfa7df597b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a3bb40a13fed6406d48dd8b12532c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c339b0e700b7eef33972441df06faa6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/10/4de64ce1-1658-4997-aba2-59513074269f.png?resizew=451)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b49bd8eb3074ba6181dabd9c1ea206a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14aeac55d519010de23642ac22cfb0b.png)
(2)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc9e44465cfdf06c04a077470598f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472eec2c8aa7a6b67d0e47b7b0f9f318.png)
(3)如图2,当点M在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304bacefe6848156df2b6331e971c492.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047b387dee9ff477571d380d7ddfbc6d.png)
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较难
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名校
解题方法
【推荐1】已知:正方形
中,
是对角线
所在直线上一点.
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804607600025600/2805835052384256/STEM/291431b0-e58c-460f-b642-e33c744488a2.png)
(1)如图1,若
在对角线
上,连接
,过点
作
交
于点
.求证:
;
(2)如图2,在(1)的条件下,若
,
,求
的长;
(3)如图3,若
在
的延长线上,连接
,过点
作
交
延长线于点
,连接
,若
,
的面积是
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804607600025600/2805835052384256/STEM/291431b0-e58c-460f-b642-e33c744488a2.png)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f000c53640cd90ae54bf114dbc6e8a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821050c63881a5349b682844e3db4a21.png)
(2)如图2,在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6281306726065e7075c579b9b66537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a92bf37efe386e969621baf38d1eb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ff13b4da65c7da3d898ba58e967b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd9f5a983c17e3cece909746b572a4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b184c94e38f1e5dbe750b2168c2a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
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解答题-问答题
|
较难
(0.4)
【推荐2】如图,在等腰三角形ABC中,∠BAC=90°,点A在x轴上,点B在y轴上,点C(3,1),二次函数y=
x2+bx-
的图象经过点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/0abb4923-6296-4044-a0fe-6d28075db37f.png?resizew=226)
(1)求二次函数的解析式,并把解析式化成y=a(x-h)2+k的形式;
(2)把△ABC沿x轴正方向平移,当点B落在抛物线上时,求△ABC扫过区域的面积;
(3)在抛物线上是否存在异于点C的点P,使△ABP是以AB为直角边的等腰直角三角形?如果存在,请求出所有符合条件的点P的坐标;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/0abb4923-6296-4044-a0fe-6d28075db37f.png?resizew=226)
(1)求二次函数的解析式,并把解析式化成y=a(x-h)2+k的形式;
(2)把△ABC沿x轴正方向平移,当点B落在抛物线上时,求△ABC扫过区域的面积;
(3)在抛物线上是否存在异于点C的点P,使△ABP是以AB为直角边的等腰直角三角形?如果存在,请求出所有符合条件的点P的坐标;如果不存在,请说明理由.
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解答题-证明题
|
较难
(0.4)
【推荐1】如图,在
ABC中,AB=AC,以AB为直径的⊙O交BC于点D,延长CA交⊙O于点E.连接ED交AB于点F.
(1)求证:
CDE是等腰三角形.
(2)当CD:AC=2:
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(2)当CD:AC=2:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a24b71f64937b1848900d850372e1a.png)
![](https://img.xkw.com/dksih/QBM/2021/3/23/2684019268255744/2684316300582912/STEM/efdc3f9d3bbb49d49bf88bff3c6a1b2c.png?resizew=234)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】已知,如图1,P是
内的一点,直线
分别交
于点A,B,易得
是点P到
上的点的距离的最大值.如图2,在平面直角坐标系
中,点
,以
为半径在x轴的上方作半圆O,交x正半轴于点B,点C是该半圆上一动点,连接
、
,并延长
至点D,使
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/49110171-e942-400a-99e8-eaf06e1bc606.png?resizew=446)
(1)连接
,直接写出
的最大值为_____;
(2)如图3,过点D作x轴的垂线,分别交x轴、直线AC于点E、F,点E为垂足.
①若点C的横坐标为4,求线段
的长;
②若将点C从点B运动到点A,则线段
(包含起点处)扫过的区域的面积为___.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a24086849e1b7c9186058782f409e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f213621229843639780aae87fa29584.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/49110171-e942-400a-99e8-eaf06e1bc606.png?resizew=446)
(1)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
(2)如图3,过点D作x轴的垂线,分别交x轴、直线AC于点E、F,点E为垂足.
①若点C的横坐标为4,求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
②若将点C从点B运动到点A,则线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次