如图,点B、C分别在射线AM、AN上,且∠MAN为锐角,∠MAN内有一动点P,使得∠BPC=90°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/c473895e-671f-4203-9e69-c65ba65cd016.png?resizew=185)
(1)若∠MAN=45°,且∠APB=∠APC.
①求证:△CPA∽△APB;
②连接BC,若BC⊥AC,求
的值;
(2)若∠CBP=∠BAP=30°,AP=3,AB=8,求AC的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/c473895e-671f-4203-9e69-c65ba65cd016.png?resizew=185)
(1)若∠MAN=45°,且∠APB=∠APC.
①求证:△CPA∽△APB;
②连接BC,若BC⊥AC,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/273905b509971fcc457f17f5d0b19b40.png)
(2)若∠CBP=∠BAP=30°,AP=3,AB=8,求AC的长.
更新时间:2022-09-04 04:35:32
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【推荐1】问题情境:数学活动课上,王老师给同学们每人发了一张矩形纸片探究折叠的性质在矩形
的
边上取一点
,将
沿
翻折,使点
恰好落在
边上点
处.
,求
的度数;
(2)如图2,当
,且
时,求
的长;
问题解决:(3)如图3,延长
,与
的角平分线交于点
,
交
于点
,当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767d0c3438178a6aef406ef427a0c0fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29e7c4d6216690152430b09f9cf0c2.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1082f4aabbd71313b02bd32eb110f0b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
问题解决:(3)如图3,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d786ee723231d4ca87eb9d011a378b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9195cc8ffac4f9ebc364f97435148323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2465ee1fec12351943f15055dfd6ec73.png)
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名校
【推荐2】如图(1)是一个创意台灯,图(2)是其抽象示意图,已知支架
,
交于点
,支架
与水平底座
的夹角
,
,
,
,灯罩抽象为
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/17/fe6d7990-b666-49c2-a279-674db8d69574.png?resizew=358)
(1)若支架
,
①求
的度数;
②求
与水平底座之间的距离.(结果精确到
)
(2)若在(1)的条件下,将支架
绕点
旋转,使
与水平底座之间的距离为
,求支架
的旋转方向及角度.
(参考数据:
,
,
,
)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731802b44d413e845cb354258d26d1a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2d04febe64e8f6bf03d001a2a9ff4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881b7df92479ab5b8af8d983178a60f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/628a0ecfb7ec838783d325909fc00c1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029ad83f1a3262048cba0e650b63e929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f05ad6755f8fc9ef86d7fb5932ff355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016ec3f9d84203785ae8d3fe27682521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3210efd28a3019da0261fe93bbff0a55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/17/fe6d7990-b666-49c2-a279-674db8d69574.png?resizew=358)
(1)若支架
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64254c5dbc7252590f8f8dabe3dbb38c.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd58f9f2603b2a02db40ca2bf9d17a3.png)
(2)若在(1)的条件下,将支架
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8a934e9edc8997c691a01134dc55ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c894b7d6baa55c80c64e74748dad898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460317e7c26f95b9b29cfe1a89b796d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4093587efe528b58dac0ab5535cbeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669574366f342aac23f8fc51d67a80dc.png)
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【推荐1】如图,正方形
是绿地公园的一块空地,其边长为
米.公园设计部门为了给儿童提供更舒适、更安全的活动场地,准备将空地中的四边形
部分作为儿童活动区,并用围栏围挡起来,只留三个出入口,即点
、点
、点
,而且根据实际需要,要使得
,并将儿童活动区(即四边形
)划分为
和
两种不同的游戏场地,儿童活动区之外的部分种植花草.
(
)请直接写出线段
,
,
之间的数量关系: .
(
)如图②,若
米,请你计算儿童活动区的面积.
(
)请问是否存在一种设计方案,使得儿童活动区的面积最大?若存在,请求出儿童活动区面积的最大值;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2017/8/28/1761760838090752/1761844084064256/STEM/b26c9dfda8ff4a4697a68ea34ba22eef.png?resizew=165)
![](https://img.xkw.com/dksih/QBM/2017/8/28/1761760838090752/1761844084064256/STEM/a97672d81df843048362eac666db22d3.png?resizew=165)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efba7147f5b9ced8bc4a72f0a9fb8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3c15b30bd155641e548a7d8c172dd4.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345c91c9e67e6ee00a872078ab17f094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3c15b30bd155641e548a7d8c172dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9016cc0783d18bbab8ec3d9e2ae25ca.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://img.xkw.com/dksih/QBM/2017/8/28/1761760838090752/1761844084064256/STEM/b26c9dfda8ff4a4697a68ea34ba22eef.png?resizew=165)
![](https://img.xkw.com/dksih/QBM/2017/8/28/1761760838090752/1761844084064256/STEM/a97672d81df843048362eac666db22d3.png?resizew=165)
![](https://img.xkw.com/dksih/QBM/2017/8/28/1761760838090752/1761844084064256/STEM/3bbcd374a7e14abd82a03fc2a4cad61f.png?resizew=163)
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【推荐2】【活动与实践】
将两个全等的直角三角形一对直角边重合,按如图1所示摆放,若
,
,将
绕点
逆时针旋转,过点
作
,交直线
于点
.
【探究发现】
(1)如图2,连接
,求证:
平分
;
【迁移应用】
(2)如图3,当点
、
、
三点共线时,求
的长;
(3)当点
在射线
上时,请直接写出
的长.
将两个全等的直角三角形一对直角边重合,按如图1所示摆放,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117878cbd8c00f2aabcdf62b487e2dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/18/d83bd9a6-a3b5-4df6-94fe-519d81952b28.png?resizew=437)
【探究发现】
(1)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b55b502f406c3525ce81b60bdfdc11e.png)
【迁移应用】
(2)如图3,当点
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
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【推荐1】如图,将
绕点A旋转得到
.
,当点
落在边
上,延长
与
交于点E.如果点E为边
的中点,求
的值;
(2)如图2,
,当点
落在边
上,且
与边
相交于点E时,如果点E、
分别为边
、
的中点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5428a5fb6f4b14e5d6d382fcb5067449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d42170c7d4249f6b390823606c18c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d42170c7d4249f6b390823606c18c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2465ee1fec12351943f15055dfd6ec73.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def38f975e46bc0f372ca7ebccf6e91d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e737bc35da650eda3825d29799b5f86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2465ee1fec12351943f15055dfd6ec73.png)
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【推荐2】如图,在矩形
中,
,将线段
绕点A逆时针旋转
度
得到线段
,过点
作
的垂线交射线
于点
,交射线
于点
.
在
延长线上运动时,
与
始终相等,且
与
始终相似,请说明理由;
(2)[深入探究]若
,随着线段
的旋转,点
的位置也随之发生变化,当
时,求
的值;
(3)[拓展延伸]连接
,当
为等腰三角形时,求
的值(用含
的代数式表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6759a981878dbedf3abdbed1cf0bec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948375537bc44877c09fdcd64cd1d633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ea8be9535f942121f6f6d873d03272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21786fe6fbbd671ba5158f4a920b8884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b620caad4623b952774f941cf4ca664.png)
(2)[深入探究]若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a2a34b4317deffa40ba34e269c2b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a723c4429be134cbdbf50b35c67dcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(3)[拓展延伸]连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6ca93d868b56ce9e2f752ec264eabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解答题-问答题
|
较难
(0.4)
【推荐1】在平面直角坐标系中,四边形
是矩形,点
,点
,点
,
是对角线
的中点,且
交
于点
.
(1)如图①,求点
,点
的坐标;
(2)将
沿
轴向右平移得
,点
、
、
的对应点分别为
,
,
,设
.
(ⅰ)如图②,
与
重叠部分的面积为
.当
与
重叠部分为三角形时,
与
相交于点
,试用含有
的式子表示
,并直接写出
的取值范围;
(ⅱ)若
与四边形
重叠部分的面积为
,当
时,求
的取值范围(直接写出结果即可).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b62194097ac66a5093c57fca2f5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109a293cef44f23e86e22c1a4cfcbbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b854530234f033b29a3e853894bc9c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8a4b91763add3ee3a9f0dc1937398d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/26/82e77b1d-11a3-4d03-a590-15d322685369.png?resizew=371)
(1)如图①,求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e00bf73d03dded1cf5f83cc5339361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc38322d678a07d9c02b6b0d99763e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ec5b34559d44ba345133399644b485.png)
(ⅰ)如图②,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc38322d678a07d9c02b6b0d99763e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc38322d678a07d9c02b6b0d99763e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb2f87d7a79bd800f2650a670a46761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc38322d678a07d9c02b6b0d99763e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f2afeff4e711964826e8fc450dcb3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
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解答题-证明题
|
较难
(0.4)
【推荐2】如图,在平面直角坐标系中,已知点M的坐标为(0,2),以M为圆心,以4为半径的圆与x轴相交于点B、C,与y轴正半轴相交于点A过A作AE∥BC,点D为弦BC上一点,AE=BD,连接AD,EC.
(1)求B、C两点的坐标;
(2)求证:AD=CE;
(3)若点P是弧BAC上一动点(P点与A、B点不重合),过点P的⊙M的切线PG交x轴于点G,若△BPG为直角三角形,试求出所有符合条件的点P的坐标.
(1)求B、C两点的坐标;
(2)求证:AD=CE;
(3)若点P是弧BAC上一动点(P点与A、B点不重合),过点P的⊙M的切线PG交x轴于点G,若△BPG为直角三角形,试求出所有符合条件的点P的坐标.
![](https://img.xkw.com/dksih/QBM/2019/4/12/2180749970407424/2181746671878144/STEM/03fd4fb640174041afe1c2be8624dd85.png?resizew=154)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐3】在平面直角坐标系中,点O为坐标原点,直线y=﹣x+10分别交x轴、y轴于B、C两点,在x轴负半轴上有一点A,tan∠CAO=3,抛物线y=ax2+bx+c经过A、B、C三点.
(1)求抛物线y=ax2+bx+c的解析式.
(2)在第四象限的抛物线上有一点P,连接AP交y轴于点E,点P的横坐标为m,线段OE长为点为n,求n与m的函数关系式.
(3)在(2)的条件下,过点E作EF⊥CE交直线BC于点F,点D坐标为(0,3),连接FD,过点E作EH⊥FD于点H,交BC于点G,点K在CD上,连接KG,∠CKG=∠EDH,点M在第一象限内,CM∥x轴,连接DM、FM,CM=
,∠DFM=45°﹣
∠DEH,求点P的坐标.
(1)求抛物线y=ax2+bx+c的解析式.
(2)在第四象限的抛物线上有一点P,连接AP交y轴于点E,点P的横坐标为m,线段OE长为点为n,求n与m的函数关系式.
(3)在(2)的条件下,过点E作EF⊥CE交直线BC于点F,点D坐标为(0,3),连接FD,过点E作EH⊥FD于点H,交BC于点G,点K在CD上,连接KG,∠CKG=∠EDH,点M在第一象限内,CM∥x轴,连接DM、FM,CM=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122e9c49a286bd7f991f03b7e9f49120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2021/7/26/2772299448614912/2806011807039488/STEM/ad8fbebe8c834a30a366313d304ee5d8.png?resizew=229)
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