1 . 提出问题:
(1)如图1,在等腰
中,
,点D在
边上,
,
,
交
于点F,
于点E,则四边形
的面积为_______.
探究问题:
(2)如图2,在四边形ABCD中,
,且
,
,
,
,求四边形ABCD的面积.
解决问题:
(3)如图3,四边形
是一个大型户外儿童游乐场,游乐场设计要求
,
,
米,
,为了让游乐场足够的宽敞,要求游乐场的面积尽可能的大,请问能否设计出符合要求的游乐场?若能请求出游乐场的最大面积,若不能请说明理由.
(1)如图1,在等腰
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46571701ccaa18d3c844ab99ee6c30e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5713d1a64003579a8daec80c5a55b939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d276d0010fd458383ea3dd61415e1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09dfa01bffe6f5d08931c75970c16b69.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/20/61a8b181-90fb-4b63-82d5-a8bfe6abcc75.png?resizew=504)
探究问题:
(2)如图2,在四边形ABCD中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd85cff10e8f192cfe0b0a8b2f4996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b00613c8a87c239ce13d9d030c17085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b929269c53a44907dba8ee298a0a522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef35540101a8d7331dfe62fd1ab4d674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
解决问题:
(3)如图3,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd85cff10e8f192cfe0b0a8b2f4996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a6f36741b86f464be362b12bac13d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23e756d10fd459bf5359b756b6c094d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbeb8ebe198bb9ef37b5c57027b28821.png)
您最近一年使用:0次
2 . 问题提出(1)当
时,二次函数
的最大值为______.
问题探究(2)已知二次函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c22804f52986009170586c673342d41.png)
是常数,
的图象经过
两点,平移该函数的图象,使其顶点始终在直线
上,求平移后所得抛物线与
轴交点的纵坐标的最大值.
问题解决(3)某养殖户利用一段围墙(围墙足够长)为一边,用总长为
的围网围成了如图所示的三块矩形区域,且这三块矩形区域的面积相等.设
的长度为
,矩形区域
的面积为
,当
为何值时,
有最大值?最大值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f22c4898e2a23e0e888b69d79719f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3236d825b994ee9c28e5d5479a57b8ed.png)
问题探究(2)已知二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c22804f52986009170586c673342d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51bc93f7a62885a5cac145ffab33528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28b08682efa2692b052f64fe1448fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297797f0c11325bcc4b4923e37d6be5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
问题解决(3)某养殖户利用一段围墙(围墙足够长)为一边,用总长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ec72d07385ed62ec9540083958be2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3bde6ef2ee5b749b4d48d706543cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a20728e9a9e3018723f2a86f24f332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/720c4897-3079-47e6-8590-10366813679d.png?resizew=130)
您最近一年使用:0次
2023-12-07更新
|
101次组卷
|
3卷引用:陕西省安康市岚皋县2023-2024学年九年级上学期期中数学试题
3 . 如图,在
中,
,
,点
是
上任意一点
,以点
为圆心
为半径作
,
与
交于点
,连接
,作
的平分线交
于点
.
(1)求证:
;
(2)
与
的另一个交点为
,连接
,设
的半径
为
,四边形
的面积为
.
①求
与
之间的函数关系式;
②当
时,求四边形
面积的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b9f355895c86198fedae25f5c551055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8094d7fe041860b77d911f2b656176f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd5cfc1134a08462e38256529685b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/3/a185d812-3d0a-4fa6-9c62-69ec2c32675f.png?resizew=118)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbab840d528f4ce7a9ef87e8446f84e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c216e354c1d47a39ba0df5a32a7bde62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00879cffccc124857ca755a8c345e45f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c216e354c1d47a39ba0df5a32a7bde62.png)
您最近一年使用:0次
4 . 我国著名数学家华罗庚曾说过:“数缺形时少直观,形少数时难入微;数形结合百般好,隔离分家万事休”,数学中,数和形是两个最主要的研究对象,它们之间有着十分密切的联系.在一定条件下,数和形之间可以相互转化,相互渗透,在我校的数学选修课上,同学们针对四边形面积求解的问题进行了探究:
【问题提出】
(1)如图1,在
中,
,
,
,E是
的中点,点F在
上,且
,求四边形
的面积.(结果保留根号)
【问题解决】
(2)如图2所示,现规划在一处滩地上规划一个五边形河畔公园
.按设计要求,要在五边形河畔公园
内挖一个四边形人工湖
,使点O、P、M、N分别在边
上,且满足
,
.已知五边形
中,
,
,
,
,
,为满足人工湖周边各功能场所及绿化用地需要,想让人工湖面积尽可能小.请问,是否存在符合设计要求的面积最小的四边形人工湖
?若存在,求四边形
面积的最小值及这时点N到点A的距离;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/5/5e3c071d-36e9-44d8-aa5a-31fb18b81030.png?resizew=467)
【问题提出】
(1)如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54efc4116b6cb296d55892a21e0d797f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d35d8d8bb0dc17f2f86fe5b230a2b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e0ee3db4954e8858303c2ef19307e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
【问题解决】
(2)如图2所示,现规划在一处滩地上规划一个五边形河畔公园
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0402c7e8ed10c0d1c56c318fb58e69b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3665266ff4b33d6d721b6e6ceab2a39b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176377e26b6defa8cbd1af93186c12bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1feef5fae8f9e744c70a09778205a5f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c4dec02850a02a8da56514ffffba952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0425abc0a23299964ede59c6a0732743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117f14c4e5e93932ae3530c41a9d5baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c436ae7f37b71d6e9587428d116e1e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614bfcee81719d5abea7b01bfac17bc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0402c7e8ed10c0d1c56c318fb58e69b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0402c7e8ed10c0d1c56c318fb58e69b6.png)
您最近一年使用:0次
真题
名校
5 . 如图,抛物线
与
轴交于
两点,与
轴交于点
.抛物线的对称轴
与经过点
的直线
交于点
,与
轴交于点
.
及抛物线的表达式;
(2)在抛物线上是否存在点
,使得
是以
为直角边的直角三角形?若存在,求出所有点
的坐标;若不存在,请说明理由;
(3)以点
为圆心,画半径为2的圆,点
为
上一个动点,请求出
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c977d0f39570f4f89be26efe20cc056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc236aba2122784d9a837803d7de366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231896d2386c924306fce5ccf9f9e8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)在抛物线上是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f6558fef858bf27e9811c2d9426fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c90eb575f3b707a5d5a420c75c6f27.png)
您最近一年使用:0次
2023-06-20更新
|
2094次组卷
|
13卷引用:数学(陕西卷)-学易金卷:2024年中考考前押题密卷
(已下线)数学(陕西卷)-学易金卷:2024年中考考前押题密卷2023年山东省烟台市中考数学真题(已下线)专题11二次函数解答压轴题(精选50道)-学易金卷:三年(2021-2023)中考数学真题分项汇编【山东专用】山东省淄博市周村区周村区第二中学(五四制)2023-2024学年九年级上学期期中数学试题黑龙江省大庆市庆新中学2023-2024学年九年级上学期期末数学试题四川省德阳市旌阳区2023-2024学年九年级上学期期末数学试题(已下线)第8讲 二次函数与几何图形2024年山东省青岛市中考数学模拟预测题2024年广东省惠州市惠阳区新世纪实验学校一模数学试题2024年山东省济南市商河县清华园学校中考一模数学模拟试题甘肃省张掖市第一中学2023-2024学年九年级下学期期中数学试题2024年广东省东莞市校级联考中考模拟数学试题2024年黑龙江省大庆市祥阁学校中考一模数学试题
6 . 问题提出:
(1)如图①,若
,
,
,则
的面积为 ___________;
问题发现:
(2)如图②,在四边形
中,
,
,
,
,点M,N分别为边
,
上两动点,且
,连接
,
,试说明四边形
的面积是定值;
问题解决:
(3)如图③是一块平行四边形空地,其中
,
,
,点M,N分别为边
上两点,且
,连接
.公司规划在
区域修建一座购物商城,在
区域修建一个顾客休息中心,在
区修建小吃城,最后中间
区域进行绿化.公司为了利益最大化,绿化面积即
的面积尽可能小.请你计算出绿化面积的最小值和
的长度.
(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284a563413dc0532138fb2a64db8cc2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
问题发现:
(2)如图②,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fb581e6a89ae40731b8619fff1e173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ddd49625097d0a78df7170be4f882e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565303d079ff096551fc0150e0d8c6cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189d1b3a382443fe329ae05a514340c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b977f9880c3acc912c36aa3e2df56c9.png)
问题解决:
(3)如图③是一块平行四边形空地,其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be94942fc04b9fdb5c3a6401a37f513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d42000ef8aca6db0be5c5606f6e6f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3bf31ba92223fc2df560592447847c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022f3ca510d8fb9097ba9082b5b265b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa4c9888544b8c58a5b6856e172c593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20d576d3824eaf583c67809124c6327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12225a1a1eda07908309f8100cc34726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/80329441-bb7f-48e9-b7c7-ff4d09a809c1.png?resizew=516)
您最近一年使用:0次
名校
7 . 问题背景
在
中,
,点D为边
上一动点,点E为边
上一动点,沿直线
把
翻折,得到
,
问题解决
(1)如图1,当
与B重合时,求线段
的长;
(2)如图2,当
与边
相交于点F,且
时,连接
.
①求五边形
面积的最大值;
②连接
,则
的周长的最小值为___________(直接写出答案).
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be7bb04798dea65725a48893104b24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34dbf33492e5223df78dea34a24ae015.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/29/5615ddfb-c6c7-4451-b037-6359daca6092.png?resizew=342)
问题解决
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968b886a9f161fdcab1e08cba8ece5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e07ec05313a6eb0f27994f432493fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
①求五边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a621d0ba529307e9df8d2a467af1083.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a037b1a3ec2e37bbcb05d0a467efb511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db121e30b06b467f5d270a1c7d91860e.png)
您最近一年使用:0次
名校
8 . 如图,在平面直角坐标系中,
的顶点
、
分别是直线
与坐标轴的交点,点
,点
是边
上的一点,
,垂足为
,点
在
边上,且
、
两点关于
轴上某点成中心对称,连接
、
.线段
长度的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/a7dc31abb9ae448a183f1784f26651f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e894101c52591ac320eed1c9b452f30.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/bffd657e48b15b9b54a55817e2c26b22.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/2/4dfce951-50f3-468c-9b48-c095f9f73f65.png?resizew=154)
您最近一年使用:0次
2023-05-31更新
|
582次组卷
|
7卷引用:陕西省西安市高新一中博雅班2023-2024学年八年级下学期第一次月考数学试题
陕西省西安市高新一中博雅班2023-2024学年八年级下学期第一次月考数学试题2023年江苏省泰州市高港区中考二模数学试题(已下线)专题13 解三角形与三角形全等-学易金卷:5年(2019-2023)中考1年模拟数学真题分项汇编(全国通用)(已下线)第22章 二次函数(单元测试·基础卷)-2023-2024学年九年级数学上册基础知识专项突破讲与练(人教版)江苏省苏州市2023-2024学年九年级上学期期中数学试题34-图形的对称、平移、旋转与位似(已下线)第4讲 轴对称和中心对称
9 . 问题探究
(1)如图1,在菱形
中,
,对角线
、
相交于点O,点P在
上,
于点E,
于点F,若
,求四边形
的面积;
问题解决
(2)如图2,菱形
是某生态农庄的规划缩略图,管理人员计划在该农庄规划一个四边形
的垂钓中心,使点P、E分别在
、
上,且
,
,
平分
,
,
.为了让更多的游客能够同时进行垂钓,要求垂钓中心(四边形
)的面积尽可能的大,请问垂钓中心的面积是否存在最大值?若存在,求出其最大值;若不存在,请说明理由.
(1)如图1,在菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db02ce96a4e2d27ad43cd61b3d08f06e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc56fdf70e65bd88980c64af96b83da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97136ba3d3ffd4c48a50d69ea502d707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbb2dce15f3d0fe839688575d2a8ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c4cfb55d68dfc47530b4604f63d69c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/7/645e74fc-24f8-46d7-9916-2380ae0131ae.png?resizew=174)
问题解决
(2)如图2,菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2455ff2c23cf7b59284eb68a9e5e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc56fdf70e65bd88980c64af96b83da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ec26b275828c9e0d4e82988f1da94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e681a881da5236e90f7fcf6207c1c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2fae188b381c5ba01b3d9d742c687dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2455ff2c23cf7b59284eb68a9e5e80.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/7/e14c1c9c-bde8-45d5-b31e-534204f023ea.png?resizew=199)
您最近一年使用:0次
名校
10 . 问题提出:
(1)如图1,等边
的边长为1,
是
边上的一点,过点
作
,垂足为
.设线段
的长度为
,
的面积为
,求
与
的函数关系式.
问题解决:
(2)某路口拐角处有一个五边形空地.为方便市民出行的需要,市政局准备在这片空地上给广大来往群众搭建一个既能遮阳又能避雨的遮阳棚.经过勘测发现,在如图2所示的五边形
中,
,
,
米,
,根据该路口的实际条件限制,需将遮阳棚形状设计为三角形,且
的顶点
、
、
分别在边
、
、
上,
为
的中点,
,为进一步提升市民的出行体验,想让遮阳棚面积尽可能大.请问,是否存在符合设计要求的面积最大的
?若存在,求
面积的最大值;若不存在,请说明理由.
(1)如图1,等边
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d2a15061b3f15f299a1c9c1ba66084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
问题解决:
(2)某路口拐角处有一个五边形空地.为方便市民出行的需要,市政局准备在这片空地上给广大来往群众搭建一个既能遮阳又能避雨的遮阳棚.经过勘测发现,在如图2所示的五边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a16a560a12b756bf2b200fb7dec434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd71399c0e5d21a162c2831ddbf93777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22818039aee691c9adf6fef3cdb12bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f2125dfe51596f77b060572f706cbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f3f9f4edf520ce61c8e83a2be394d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](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/51646a6ac0d36b3b7eec059bbd9473ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f3f9f4edf520ce61c8e83a2be394d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f3f9f4edf520ce61c8e83a2be394d6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/8/7eb25a5d-3356-4b2b-aa6b-431630565ac9.png?resizew=441)
您最近一年使用:0次
2023-10-07更新
|
159次组卷
|
4卷引用:2022年陕西省西工大附中分校中考八模数学试题