名校
1 . 问题探究
中,E,F,G,H分别是边
,
,
,
上的点(不与
的顶点重合),连接
,
,当
,
时,求证:
.
问题解决
(2)某设计师根据客户要求在一块圆形场地进行布景设置.如图2,设计师通过设计软件画出圆形场地,记作
,主区域
内接于
,
经过圆心O,M为
上一点,
,
,垂足分别为E,F,要求
.观赏区为
与
,已知
.设
,观赏区
与
的面积的和为
.
①求S与x之间的函数关系式.
②当S最大时,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b4e97618f0af8c34ce1e9439f57416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec88344eba7ecacdcffea57c46858f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fc875d6109cbef8979486fd48b5683.png)
问题解决
(2)某设计师根据客户要求在一块圆形场地进行布景设置.如图2,设计师通过设计软件画出圆形场地,记作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/bd2b7f0278281f7864a5e3ee440857a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578f5b6d50ce105d5dc6fa43ede14e19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21786fe6fbbd671ba5158f4a920b8884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d493b4c84d8dc832e323a0bcd0db5589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099533e271f73c7296f42b9219fc7b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e353fe2a2d40f35b2a55b3785ba36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21786fe6fbbd671ba5158f4a920b8884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d493b4c84d8dc832e323a0bcd0db5589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ec46ba5eab5c6e3f9a7788eda30a57.png)
①求S与x之间的函数关系式.
②当S最大时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2 . 请认真阅读下列材料,并完成相应的任务.
(1)材料中的依据为______;
(2)把材料中的证明过程补充完整;
(3)古希腊数学家帕普斯在梅文鼎证法的基础上进行了改进,如图(3),
中,
,
,以
为边作
和
,且
中
边的高为2,
的面积为6,延长
交于点R,连接
并延长,过点B作
,且
,再以
为边作
.请直接写出
中
边的高.
从毕达哥拉斯到帕普斯 毕达哥拉斯从地板的结构中发现了直角三角形的三边关系——勾股定理,之后相继有很多数学家及数学爱好者都用面积割补法给出了验证.如我国三国时期的数学家赵爽,美国第二十任总统加菲尔德等.欧几里得在《几何原本》中第一次在公理体系下给出了以三角形为“桥梁”证明勾股定理的方法:如图(1),过点A作 ![]() ![]() ![]() 先证明 ![]() ![]() 又因为 ![]() ![]() 所以 ![]() 同理得 ![]() ![]() 即 ![]() 之后,我国清代数学家梅文鼎在欧几里得证法的基础上,进行了“改进”,以平行四边形作为“桥梁”进行了证明.如图(2),延长 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ∵四边形 ![]() ![]() ∴ ![]() ![]() ![]() ∴ ![]() ∴ ![]() ![]() ∵ ![]() ∴ ![]() ∴ ![]() ∴ ![]() ∵四边形 ![]() ∴ ![]() ![]() ∵ ![]() ∴ ![]() ∴ ![]() ∴ ![]() ∵四边形 ![]() ∴ ![]() ∴四边形 ![]() ∴ ![]() ∵ ![]() ∴ ![]() ∵ ![]() ∴ ![]() ∵ ![]() ![]() ∴ ![]() |
(1)材料中的依据为______;
(2)把材料中的证明过程补充完整;
(3)古希腊数学家帕普斯在梅文鼎证法的基础上进行了改进,如图(3),
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dc62e10004e73908091338362917da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f6b2985eccf6fa89b362ea0abb3591.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27bbe3eadf469c4759fecde42de44fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f6b2985eccf6fa89b362ea0abb3591.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27bbe3eadf469c4759fecde42de44fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84631aa12d8a9bee105b7f73b8a79c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd58415d4a40dfd7ae911997aba705a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc055a8dbbe6944ed198c1044f03e79b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cba2c8cc5653c686a27d8cb6b69317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d37717fa5092fa37ddc8c45a57bb444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4210cf7258b643d8bda7928ca763881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4210cf7258b643d8bda7928ca763881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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3 . 综合与实践
问题情境
在综合与实践课上,老师出示了两张全等的三角形纸片
,其中
,
,
.如图
,三角形纸片
与三角形纸片
重合,然后将纸片
绕点
顺时针旋转(旋转角不超过
),
与
交于点
,
与
交于点
.
操作与计算
(
)如图
,当
时,求
的长.
深度思考
(
)“雄鹰”小组受到了启发,提出了问题:如图
,当
时,试猜想
与
的数量关系,并说明理由.
拓展探究
(
)“智慧”小组进一步研究.如图
,过点
作
的平行线交
于点
,过点
作
的平行线交
于点
,连接
.当
时,直接写出四边形
的面积.
问题情境
在综合与实践课上,老师出示了两张全等的三角形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5a1b5af8099353be1560c085ec3a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4faa61e76585aa348b6d93b8842e990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32cd85d0cc331d47061562a498325567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c2e74ba16cfbc7ae2a7b1149672e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6c9a36e2ef7189317ae652c56e49c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
操作与计算
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aad38b43462ca7a8fb9bc9484ad3a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
深度思考
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7990cc55289f09c4e67860bb64bb2b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3064b70f24e9bbcab76e0dc61274b9b.png)
拓展探究
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0d584685408f8529cc9933a9a66ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b9982a8335c4d17dbedb3c8161070f.png)
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2024-04-23更新
|
117次组卷
|
2卷引用:2024年山西省晋中市和顺县中考一模数学试题
名校
4 . 如图
,在等腰
中,
于点D.动点
从点
出发,沿着
的路径以每秒
个单位长度的速度运动到点
停止,过点
作
于点
,作
于
.在此过程中四边形
的面积
与运动时间
的函数关系图象如图
所示,则
的长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd5f930d72a68e57ae5731e2e6edcae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3087da5c11909dab613378fee8d471fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc56fdf70e65bd88980c64af96b83da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7edadd9995393ece0d7b7bf4801504bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c60e55bab172b9a85f62514f5a372f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-04-22更新
|
407次组卷
|
5卷引用:2024年广东省深圳市南海中学中考三模数学试题
5 . 如图,
中,
为钝角,以
为边向外作平行四边形
,
为钝角,连结
,
,设
,
,
的面积分别为
,
,
,若知道
的面积,则下列代数式的值可求的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246a86f34603eaf2e6a948681b831b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 如图,边长为的正方形
内部有一点
(不在边界上),过点
分别作两边的平行线
,
,与各边的交点分别为
,
,
,
,记四边形
面积为
,四边形
的面积分别为
,四边形
的面积为
,四边形
的面积为
,
,
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f263552b69276d15858fa712bbbaa8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ced991055fe6d4943c77a2fd6e44294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9512fe4106c98ffed5a22331bf393d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a7301f925068ca2ebd73044f3227ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8060a00d925f27135a7baff2d0e9d598.png)
(3)对于确定的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5227f35e18b15ec2a3b30fa38f981b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942bbf4a929beb9ab9b8a18a30286134.png)
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2024-01-14更新
|
121次组卷
|
3卷引用:浙江省初中名校发展共同体2023-2024学年九年级上学期12月中考模拟数学模拟预测题试题
7 . 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
8 . 在
中,
,
平分
交
于点E,D是边
上一点,以
为直径的
经过点E,且交
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/4389a71d-cd21-47ae-a79d-b628a5837ea4.png?resizew=155)
(1)求证:
是
的切线;
(2)若
,
,求图中阴影部分的面积.
![](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/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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/4389a71d-cd21-47ae-a79d-b628a5837ea4.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce84f6062f12bf6ef42d7b733cd2248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e44d7372864cc7cf8c6396458771f79.png)
您最近一年使用:0次
2023-12-31更新
|
400次组卷
|
6卷引用:2024年湖北省孝感市孝南区中考一模数学试题
2024年湖北省孝感市孝南区中考一模数学试题湖北省襄阳市枣阳市2021-2022学年九年级上学期期末数学试题(已下线)专题08 圆(考点清单,12个考点)-2023-2024学年九年级数学上学期期末考点大串讲(北师大版)内蒙古自治区巴彦淖尔市杭锦后旗杭锦后旗陕坝中学2023-2024学年九年级上学期12月月考数学试题辽宁省盘锦市大洼区大洼区第二初级中学2023-2024学年九年级上学期12月月考数学试题(已下线)专题03 圆(十四大题型)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(山东专用)
名校
9 . 在平面直角坐标系中,
为坐标原点,抛物线
分别交
轴、
轴于A、
、
三点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/ce492ced-6dab-43fd-8ff8-6338bcca66c7.png?resizew=447)
(1)求a的值;
(2)如图,点
在第一象限内抛物线上,其横坐标为
,连接
、
、
,设
的面积为
,求
与
的函数关系式;(不要求写出
的取值范围)
(3)如图,在(2)的条件下,直线
交
轴于
,交
轴于
,交
于点
,点
在
上,连接
,使
,点
在
上,连接
,使
,作
轴,连接
交
轴于
,使
,点
在第一象限内抛物线上,
于
,连接
,使
,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613007eddfbe4be5c6a63e9098022996.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c4741770122b25ef749a6a5d4cf1b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/ce492ced-6dab-43fd-8ff8-6338bcca66c7.png?resizew=447)
(1)求a的值;
(2)如图,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a698deee0d36c8d2772f39247f3f1b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如图,在(2)的条件下,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff383364829f5ecf44c90fa6570b06f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97223e7c3ff2c78bdedae87a8ba66112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf9991e19fdfb58120c3d235f3a298c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f33cf87dcf6ef44ff2e3cfd8567636f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44748f376df3a2e8d7d174791d4ae66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc2d3525acc696ae2e38c21843bda8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a1aa44ba17c19b10bc40d2809c5aac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afce305dfd6007815ea0b83d7b9f0f3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333a29b9b2ccc37e7bbaf56c98d0f6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c56f2eeb3c54318f4a88993d5fd8d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55bb0405afa96ebf94c5b03fd52763dd.png)
您最近一年使用:0次
名校
10 . 已知:
中,
,
,时线
,点D在射线
上,连接
,将线段
绕点D逆时针旋转
得到
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/47709eae-b7f1-4602-96fa-e9a27774f5f7.png?resizew=334)
(1)如图1,连接
并延长交射线
于点F,若
,当
时;
①
°;
②求
的长;
(2)如图2,连接
交
于点G,若
,
,试求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6e4a2df58a236c20df5df0d29a466c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f860fd4f992412e6c8d236bb44c9e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.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/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/47709eae-b7f1-4602-96fa-e9a27774f5f7.png?resizew=334)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d653fbebdc18f412b75454425a07de5d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb74fdc5724514d0a8a01a7ff420309.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6cee83d36c4da913e0790e5070c46f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf183bb570296ae27fa34a81a77de7ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次
2023-11-29更新
|
88次组卷
|
3卷引用:2023年广西桂林市灵川县中考数学一模试题