名校
1 . 如图,现打算用
的篱笆围成一个“日”字形菜园
(含隔离栏
),菜园的一面靠墙![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(篱笆的宽度忽略不计)
吗?若可能,求边长
的长,若不可能,请说明理由;
(2)因场地限制,菜园的宽度
不能超过
,求该菜园面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8badcdb1e5621f0ac4d9272041185a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158369d4d5ad3d505042173712cf3af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18c2faa72796e48f1938558b3c9d868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)因场地限制,菜园的宽度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea92883fe24b097c9a881ef8c92eb1.png)
您最近一年使用:0次
2024-04-15更新
|
428次组卷
|
15卷引用:陕西省西安市西安高新第一中学2023-2024学年九年级上学期期中数学试题
陕西省西安市西安高新第一中学2023-2024学年九年级上学期期中数学试题福建省龙岩市2022-2023学年九年级上学期期末数学质量检测福建省龙岩市新罗区2022-2023年九年级上学期期末质量监测数学试卷福建省福州市福建省长乐第一中学2023-2024学年九年级上学期开学考试数学试题福建省厦门市思明区厦门市第十一中学2023-2024学年九年级上学期开学考数学试题天津市南开区美达菲学校2023-2024学年九年级上学期月考数学试题江苏省如皋市石庄镇初级中学2023-2024学年九年级上学期第一次学情监测数学试题(已下线)22.2+二次函数与实际问题(题型精讲精练)3(原卷版)吉林省2023-2024学年九年级上学期期中数学试题山东省德州市宁津县2023-2024学年九年级上学期期末数学试题浙江省杭州市萧山区高桥初中教育集团2023-2024学年九年级上学期10月月考数学试题福建省厦门市思明区大同中学2023-2024学年九年级上学期第二次月考数学试题(已下线)专题05 二次函数(5大易错点分析)-备战2024年中考数学考试易错题(浙江专用)2024年中考数学考前冲刺预测模拟预测题(已下线)专题09二次函数的应用(2个知识点4种题型1个易错点)-【帮课堂】2023-2024学年九年级数学下册同步学与练(北师大版)
2 . 如图,在矩形
中,
,
,点
和点
分别为
边和
边上的动点,且满足
,则当
的面积最大时,
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cee49e97546d466ba3ee630e08cdc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c545764505bb00578a870c5e39493a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2f22b058793ad378d807517c79d8f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/0caa201a-ff90-4157-89f3-5d1b272ad739.png?resizew=114)
您最近一年使用:0次
2024-02-03更新
|
68次组卷
|
2卷引用:陕西省渭南市白水县2023-2024学年九年级上学期期末数学试题
3 . 问题提出
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/cd54c51a-39ce-45a6-997c-603be8084cf2.png?resizew=506)
图1 图2 图3
(1)如图1,已知矩形
的面积为42,点
、
分别在边
、
上,连接
,若
,
,则四边形
的面积为__________;
问题探究
(2)如图2,已知
中,
,
,
,边
的垂直平分线分别交
、
于点
、
,连接
,过点
作
,垂足为
.求
、
的长;
问题解决
(3)现要对一块四边形空地
进行规划,其示意图如图3所示,其中
,
,连接
,
,
,在
上找点
,过点
作
于点
,连接
,根据规划在
与
区域种植花卉,其余区域种植草坪.
①设
的长为
,
和
的面积之和为
,求
与
之间的函数关系式;
②种植花卉每平方米需花费0.01万元,种植花卉至少需要总费用多少万元?
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/cd54c51a-39ce-45a6-997c-603be8084cf2.png?resizew=506)
图1 图2 图3
(1)如图1,已知矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e7c422a19b68b8b4cd484d22897e3a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f218914337edd06e59e75d90b777e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4465a96d65de0f859ea4ec9e548204d7.png)
问题探究
(2)如图2,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6f3d14d4c0d628472a0b5dbd603f53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df308527607ac9c4b7feb299659b1b9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf23e73ae2a15c04bbed3981cb8e511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
问题解决
(3)现要对一块四边形空地
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dceb5cc71fc50f20649f6b9535fd914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3e85929066e731dd6622524995a4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73fa0275d040a72093dd101a0d3752ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587458141d890533c0c32aa249a27ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d04cda82e68384a1dc00dd7cca92e489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6074f4beb31fb393ae3978e0035ae16f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a105649c15ef9598a6df8d794deb38.png)
①设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3bde6ef2ee5b749b4d48d706543cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6074f4beb31fb393ae3978e0035ae16f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a105649c15ef9598a6df8d794deb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a20728e9a9e3018723f2a86f24f332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②种植花卉每平方米需花费0.01万元,种植花卉至少需要总费用多少万元?
您最近一年使用:0次
4 . 问题提出
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/2e1e1b18-a5e0-4f23-b455-bb7cf950654a.png?resizew=436)
如图
,在
中,
.若
,则
的值为__________.
问题探究
如图
,在四边形
中,对角线
、
相交于点
,
、
、
、
分别为
、
、
、
的中点,连接
、
、
、
.若
,求四边形
的面积.
问题解决
如图
,某市有一块五边形空地
,其中
米,
米,
米,
米,现计划在五边形空地内部修建一个四边形花园
,使点
、
、
、
分别在边
、
、
、
上,要求
请问,是否存在符合设计要求的面积最大的四边形花园
?若存在,求四边形
面积的最大值;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/2e1e1b18-a5e0-4f23-b455-bb7cf950654a.png?resizew=436)
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4d24c1c0d75be03afbfe64a41aee7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
问题探究
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cafbe2751f4f4c5a8e676818195e9111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0989ab6363e37ecee4565ded7891fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87a0802a3da63fbf219b527636864cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c89029e1d782dbf6a0bda8605a7c5ad4.png)
问题解决
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6723f8b9d907981aa735cd96386bee36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eeec9cb156d9fbb9ac1bf3f9a675260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fb19963d0798aabcb1b4b8b951bc302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd81878e3c1a10e9cc9f056f09b2eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78245a4a4d968e5f8b78606505d8733d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e420f0021f02177e7818224e7b90c2cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cf2eac4f5d07bb7e68795462bd3732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e420f0021f02177e7818224e7b90c2cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e420f0021f02177e7818224e7b90c2cf.png)
您最近一年使用:0次
5 . 【问题提出】
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/137f9092-6f83-41ff-8fee-f556701c9907.png?resizew=419)
(1)如图1,在
中,
.请在
内画一个正方形,使得这个正方形一个内角为
,其余顶点落在
的边上;
【问题探究】
(2)如图2,
是锐角三角形,其中
,若要在
中做出一个平行四边形,使平行四边形一边
落在
上,另两顶点落在
上,请求出满足条件的平行四边形面积的最大值.
【问题解决】
(3)如图3,有一四边形
与
交于
,现要在四边形
中截出平行四边形
,使得平行四边形一边
与
平行,四个顶点
落在四边形
的四边上,当
时,求线段
的长度.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/137f9092-6f83-41ff-8fee-f556701c9907.png?resizew=419)
(1)如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
【问题探究】
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb31aced57fab505d1dd215fcb31400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
【问题解决】
(3)如图3,有一四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d94651fcfd4fe8d51fdcdc9ab8a215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3d4815b230ab49048cf843dfaf62e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c2d86d8daea5e652d99fe1c6bc3f9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a343f11040d8a810edfebfbe324fa06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
6 . 如图,矩形
的四个顶点都在
的边上,
于点D,交
于点N.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/e6a94be4-4411-47dd-b456-c6adc16d50ad.png?resizew=205)
(1)求证:
;
(2)若
,
,设
的长度为x,矩形
的面积为y,则矩形
的面积是否有最大值?如果有,请求出矩形
面积的最大值:如果没有,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/e6a94be4-4411-47dd-b456-c6adc16d50ad.png?resizew=205)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a795fcbf55b39b09e0b3f77f6df59f93.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2176dac04a8b410e319342fb8e895b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
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名校
7 . 如图,学校准备在一块一边靠墙(墙长
米)的空地上用栅栏围成一个矩形绿化带
,绿化带的一边靠墙,中间用栅栏隔成两个小矩形,所用栅栏总长为
,设
的长为
,矩形绿化带的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/dd09eee4-a2f3-4478-9e44-b95c6c04c34b.png?resizew=157)
(1)若围成矩形绿化带
面积为
,请求出
的长为多少米?
(2)求围成矩形绿化带
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/652d9ac21e0f4af80df32e8c0d6b7e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/020002d330fb0c4af61de95dfdf9dbb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3bde6ef2ee5b749b4d48d706543cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5e6560863ee663a60dc7932acb5cd3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/dd09eee4-a2f3-4478-9e44-b95c6c04c34b.png?resizew=157)
(1)若围成矩形绿化带
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9096d046469395551a7efa6d124c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求围成矩形绿化带
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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8 . 问题提出:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/66fd1c5d-ffd7-4a48-bcb5-3667f8ab7696.jpg?resizew=437)
(1)如图①,
的边
在直线n上.过顶点A作直线
,在直线m上任取一点D,连接
,则
______
.
问题探究:
(2)如图②,在
中,
,且
边上的高为3,若过点C作
,连接
,求
的面积;
问题解决:
(3)如图③,有一个菱形广场
,己知
米,
,连接AC.现计划对这个广场进行绿化,在阴影部分区域内种植绿植,且满足点P,M,N分别在
、
、
上,
,
.为了节约成本,要求种植绿植的区域面积尽可能的小,你认为该计划能否实现?如果能,请求出阴影部分面积的最小值;如果不能,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/66fd1c5d-ffd7-4a48-bcb5-3667f8ab7696.jpg?resizew=437)
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0205571fa39f343ee5749b78d466bf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/400f20886ae7730596a59c48271e0d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce610f7d9665868e9b223cec3a2c654e.png)
问题探究:
(2)如图②,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aad38b43462ca7a8fb9bc9484ad3a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fd5cb769dfb13c619e026e175d0371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
问题解决:
(3)如图③,有一个菱形广场
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99154aec25bfa23baa5343bf0c21991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb35d4594b16e3d3486becc930d1030f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddcd5560e4e3b7fad5ecaab038a9c00e.png)
您最近一年使用:0次
9 . 如图,矩形
的四个顶点在等边
的边上,已知
的边长为4,则矩形
的面积的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/1efd3984-9f0c-4f45-af65-9cb70be3f617.png?resizew=113)
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名校
10 . 问题提出
(1)如图1,
是一个边长为
的等边三角形,则
面积为 .
问题探究
(2)如图2,在四边形
中,已知
,
,
,
,
为
点,求
的面积.
问题解决
(3)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遮阳棚.经过勘测发现,在如图
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
、
、
分布在边
、
、
上,点
为
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,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
问题探究
(2)如图2,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ab59643d496b81f30db4ca679cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377f5c10cf527c87ab06bff61384f7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee82a25c3ccc4bd94f3f528ff3e95713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e34f3fbb1adf23cf81d7005f4387a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
问题解决
(3)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遮阳棚.经过勘测发现,在如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6723f8b9d907981aa735cd96386bee36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b5c5516a535505f72423e21d07eaf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5472365a2a6efa35c28bfbb0c156d63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0bdcbf3d676b1ce9227b4ac6e054ba.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/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b319ded5d07ee1900689cf40674a63.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/2023/12/19/eff1662f-7076-411e-b709-2e61a76d6e09.png?resizew=523)
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2023-12-19更新
|
110次组卷
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2卷引用:陕西省西安市高新第一中学2023-2024学年九年级上学期月考数学试题