如图,抛物线
与x轴交于A,B两点(点A在点B的左边),与y轴交于点C,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/b04ea86d-863c-4c46-9447-0da7c63467c2.png?resizew=197)
(1)求抛物线的解析式;
(2)如图,若点P是线段
(不与B,C重合)上一动点,过点P作x轴的垂线交抛物线于M点,连接
,当
和
相似时,求此时点P的坐标;
(3)若点P是直线
(不与B,C重合)上一动点,过点P作x轴垂线交抛物线于M点,连接
,将
沿
对折,如果点P的对应点N恰好落在y轴上,求此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8580445c2a200ba9d6d68412f6ee2b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c8dbc31b2e14067ef2f34b4e25f114.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/b04ea86d-863c-4c46-9447-0da7c63467c2.png?resizew=197)
(1)求抛物线的解析式;
(2)如图,若点P是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf1490f8bd695ad195aa1a52fe36373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)若点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf1490f8bd695ad195aa1a52fe36373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15077d4800100fa5fcf1e453d74eae0.png)
21-22九年级下·江苏苏州·期中 查看更多[2]
江苏省苏州市吴江区铜罗中学、盛泽一中2021-2022学年九年级下学期期中数学试题(已下线)第6章 图形的相似(基础、典型、易错、压轴)分类专项训练-2022-2023学年九年级数学考试满分全攻略(苏科版)
更新时间:2022-09-24 10:41:20
|
相似题推荐
解答题-问答题
|
困难
(0.15)
解题方法
【推荐1】如图,抛物线
与直线
交于
,
两点,抛物线与
轴负半轴交于点
.
(2)
在第二象限抛物线上,作
轴交
于点
,作
轴,
轴,垂足分别是
,
,当四边形
为正方形时,求
的长;
(3)
为第一象限抛物线上的点,
为直线
上的点,当
与
相似时,直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd4da08956db1f206c8ea026f4e52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fcf82d01c39fd2c96e1edba0ad37dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a880ffabfdf4a3ae2226616d80f08d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37071b8c50518bc7f84ca44a791b0fa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf783d3172debc69f963495e5bff78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)
![](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/e8dcc9f79fe5f07f25447aa442ee14ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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【推荐2】如图1,抛物线
与
轴正半轴交于点
,对称轴为
.
(1)直接写出抛物线
的解析式;
(2)如图1,直线
经过点
,交抛物线
于另一点
,点
在线段
上,过点
作直线
轴交抛物线
于点
,连接
,若
,求点
的坐标;
(3)如图2,将抛物线
向左平移
个单位长度,再向上平移
个单位长度得到抛物线
,点
在抛物线
上,点
在点
的右边,如果
的两条边
,
所在直线与抛物线
都有唯一共同点,且
都与
轴不平行,
的面积为
,设
,
两点的横坐标分别为
,求
与
的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7203b2df70a4e85e997ff4b8705ed142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586d7140ec380af8c32bc216887477ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/24/025e30c1-4c96-46ff-95b2-c0a4fbd661ad.png?resizew=247)
(1)直接写出抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)如图1,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5fdd692004b021e7156b1129a95127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f27083267432a9352fb6677a07d461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1338b7ce4ef9febae67e068b81284f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图2,将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/a0d13e82ad6bdae51f30e2a3dafd630d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d8e33929752b1cb4dd36ee9b98b45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2614b35789a1050aa18e74092577fe5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d13e82ad6bdae51f30e2a3dafd630d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/22b4218f00da487d3f63b9360144708f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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解答题-问答题
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困难
(0.15)
【推荐3】如图,抛物线y=ax2+2x−3与x轴交于A、B两点,且B(1,0).
![](https://img.xkw.com/dksih/QBM/2022/5/23/2985609808789504/2989422082793472/STEM/d1123543280643498331f603d84e2ae4.png?resizew=203)
![](https://img.xkw.com/dksih/QBM/2022/5/23/2985609808789504/2989422082793472/STEM/1b0ca96e34c143dcb3e5c8d17f5cab35.png?resizew=203)
(1)求抛物线的解析式和点A的坐标;
(2)如图1,点P是直线y=x上在x轴上方的动点,当直线y=x平分∠APB时,求点P的坐标;
(3)如图2,已知直线y=
x−
分别与x轴、y轴交于C、F两点,点Q是直线CF下方的抛物线上的一个动点,过点Q作y轴的平行线,交直线CF于点D,点E在线段CD的延长线上,连接QE.问:以QD为腰的等腰△QDE的面积是否存在最大值?若存在,请求出这个最大值;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2022/5/23/2985609808789504/2989422082793472/STEM/d1123543280643498331f603d84e2ae4.png?resizew=203)
![](https://img.xkw.com/dksih/QBM/2022/5/23/2985609808789504/2989422082793472/STEM/1b0ca96e34c143dcb3e5c8d17f5cab35.png?resizew=203)
(1)求抛物线的解析式和点A的坐标;
(2)如图1,点P是直线y=x上在x轴上方的动点,当直线y=x平分∠APB时,求点P的坐标;
(3)如图2,已知直线y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
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解答题-证明题
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困难
(0.15)
【推荐1】综合与实践:
【课堂探究】在一堂主题为“几何翻折问题的拓展与深化”的数学公开课上,王老师给同学们每个人下发了一张平行四边形纸片,并且给出了一些数据(如图1),并提出,其中平行四边形两边所成的锐角的正切值为
.
(1)为了课堂的顺利进行,王老师先让同学们求出了
_____°;
【实践操作】数学课开始后,王老师让同学们在小组内先动手实践操作,对平行四边形进行翻折探究翻折后图形的性质.在同学们动手实践的过程中,王老师随机挑选了一个小组的操作成果(如图2)并进行展示,接着将其抽象为了一个数学问题.
(2)如图2,在(1)的条件下,点
在
上运动,点
在
上运动,点
为
沿着
翻折后点
的对应点.求证:当M是
中点时,点
落在
边的中线上;
【思考讨论】同学们经过思考后,纷纷给出了自己对于这个问题的看法.王老师非常高兴,继续将问题进行了深入.
(3)如图3,连接
,
,
,延长
至
,连接
,
.若
,
,求证:
平分
;
【学以致用】同学们经过本课的学习,对图形再次进行深入挖掘,在原来的基础上设问:
(4)在(3)的条件下,请直接写出
的正切值.
【课堂探究】在一堂主题为“几何翻折问题的拓展与深化”的数学公开课上,王老师给同学们每个人下发了一张平行四边形纸片,并且给出了一些数据(如图1),并提出,其中平行四边形两边所成的锐角的正切值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
(1)为了课堂的顺利进行,王老师先让同学们求出了
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386cda9f96731510d52ec18199e18286.png)
【实践操作】数学课开始后,王老师让同学们在小组内先动手实践操作,对平行四边形进行翻折探究翻折后图形的性质.在同学们动手实践的过程中,王老师随机挑选了一个小组的操作成果(如图2)并进行展示,接着将其抽象为了一个数学问题.
(2)如图2,在(1)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/033e44163b3b8e0813685744ee4da07a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
【思考讨论】同学们经过思考后,纷纷给出了自己对于这个问题的看法.王老师非常高兴,继续将问题进行了深入.
(3)如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffb952f86442845da723fd291564484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab41cce6eb2d3058a644314865d16548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.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/c4b564c923bdec474b6779a1f8482f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c42c394431e2c46db0936a50efb780a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e52abc8bcfbc43c80b221f60a3e45b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356d4349bc0500c3b20b57012a440658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed24d7acba0b3a7ebf4d520296424a3.png)
【学以致用】同学们经过本课的学习,对图形再次进行深入挖掘,在原来的基础上设问:
(4)在(3)的条件下,请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7dca1b3ff383165df0de276308e833.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
解题方法
【推荐2】如图1所示,有一条足够长的纸条
,满足
,
,点E是
边上的点.将
沿着折痕
折叠,使得射线
与射线
重合,折痕
交
于点F;将
沿着折痕
折叠,使得射线
与射线
重合,折痕
交
于点G.
![](https://img.xkw.com/dksih/QBM/2020/11/3/2584880556007424/2584966645170176/STEM/772ecc912fe044b1a05466553762855f.png?resizew=469)
(1)求
的度数;
(2)若左右平移点E,那么
的比值是否随之发生变化?若变化,请说明理由;若不变,请求出这个比值.
(3)如图2,若
,点P是
边上的动点,连结
,将三角形
沿着折痕
折叠,得到三角形
,折痕
交
于点P,在点P的移动过程中,当
平行于三角形
的其中一边时,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3975d0e87ea5028d37444dca76b331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfc2771aa0d5b97d2297f8a26a6f6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29e7c4d6216690152430b09f9cf0c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2020/11/3/2584880556007424/2584966645170176/STEM/772ecc912fe044b1a05466553762855f.png?resizew=469)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c767d5ddd42ea81075c4a3e30f6dba40.png)
(2)若左右平移点E,那么
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a6eea7f5662eab3d01e554090d970d.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1374d548e62d8e7387ca3f8733623a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24fac8b38a9cf7602391f6d6ca933bd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec00d78968a9d23542b25787253d7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec00d78968a9d23542b25787253d7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3acb6b5359a901c5b5a71f32f7f6ca32.png)
您最近一年使用:0次
【推荐1】定义:若一个四边形能被其中一条对角线分割成两个相似三角形,则称这个四边形为“和谐四边形”,这条对角线叫“和谐线”.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/980f2e0f-8e0c-4d6b-a14a-64e2369d6d4a.png?resizew=619)
(1)如图1,在
的正方形网格中,有一个网格
和两个网格四边形
与四边形
,其中是被
分割成的“和谐四边形”的是______.
(2)如图2,
平分
,
,
,四边形
是被
分割成的“和谐四边形”,求
长;
(3)如图3,A为抛物线
的顶点,抛物线与
轴交于点B,C.在线段
上有一个点
,在射线
上有一个点Q.P、Q两点分别以
个单位/秒,5个单位/秒的速度同时从
出发分别沿BA,BC方向运动,设运动时间为
,当其中一个点停止运动时,另一个点也随之停止运动.在第一象限的抛物线上是否存在点
,使得四边形
是以
为和谐线分割的“和谐四边形”,若存在,请直接写出
的值;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/980f2e0f-8e0c-4d6b-a14a-64e2369d6d4a.png?resizew=619)
(1)如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb9d60d456560e9bac66c8b20c49bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45fb9a3d61c62c86cde849e519e6bb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)如图3,A为抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d72b02ea5505034183592909f68596c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29c91d6f5c40e66adcf2bb5151478db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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解答题-证明题
|
困难
(0.15)
名校
【推荐2】如图在
中,AB是直径,弧
弧BE,点C在弧AE上.
![](https://img.xkw.com/dksih/QBM/2020/11/16/2601236905091072/2609841989140480/STEM/47ef3a71-b134-468a-82ec-5914ad4144ca.png?resizew=741)
(1)如图1,求证
;
(2)如图2,若CD过点O,连接DB,并延长与CE的延长线交于点M,求证:
;
(3)如图3,在(2)的条件下,点G在AO上,连接GC.GE,GE与CD相交于点K,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba524fef80814a8b75db5510dc330c6.png)
,
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12654e73b28db67d8eb198265610d0d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c978d92edf0c4c1ef8620c17df75d35e.png)
![](https://img.xkw.com/dksih/QBM/2020/11/16/2601236905091072/2609841989140480/STEM/47ef3a71-b134-468a-82ec-5914ad4144ca.png?resizew=741)
(1)如图1,求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03dec5f11c1dcf9747edcd27a798fa56.png)
(2)如图2,若CD过点O,连接DB,并延长与CE的延长线交于点M,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b47af19fd10b8b366c9aa7c0264ebe11.png)
(3)如图3,在(2)的条件下,点G在AO上,连接GC.GE,GE与CD相交于点K,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba524fef80814a8b75db5510dc330c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/273793aee7d5a97c0a48d1eaf2c35837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe1651eb479e5e1e7c59e463ab1b959a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8b3f841f0d84f02a3096f3a1ae0ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c352afcdfc43740211cbe62185deb716.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
名校
【推荐1】在矩形
中,
,
,点
是边
上一动点,
交边
于点
,点
在射线
上,且
是
和
的比例中项.
![](https://img.xkw.com/dksih/QBM/2024/2/29/3443425687298048/3443568631504896/STEM/b223c0b07fad448fa287c8bfb9a68a6b.png?resizew=526)
(1)求证:
;
(2)如图1,当点
在线段
上时,设
,
,求
关于
的函数解析式,并写出
的取值范围;
(3)如图2,连接
,交
于点
,如果
与
相似,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ba1aff0f5f2ee43c1b3bd9aae6aad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://img.xkw.com/dksih/QBM/2024/2/29/3443425687298048/3443568631504896/STEM/b223c0b07fad448fa287c8bfb9a68a6b.png?resizew=526)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdca085f9bb0fec099f92e2e54226984.png)
(2)如图1,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c30f73c718bde8352055a14987fc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4914d142641c85ea5454b1eb05ac4204.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/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07fbad473c16df3ff62c1c6b37de6aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48e42ce4fd7e6da946bf2b7b22200db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】二次函数
的图象记为
,其中
.
(1)请直接写出二次函数
与
轴的交点
及其对称轴;
(2)若二次函数
过点
,其与
轴的另一个交点为
,抛物线
上是否存在点
,使
是直角三角形,若存在,请求出点
的横坐标,若不存在,请说明理由;
(3)在(2)的条件下,二次函数
的图像为
,且夹在直线
与抛物线
之间,二次函数
同时符合以下三个条件:
①当
时,二次函数
最大值与最小值之差为9;
②当
时,
随
的增大而减小;
③若把图象
向左平移3个单位,当
时,
随
的增大而增大;求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3daef3546432085a0a7fc652d2f4da8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
(1)请直接写出二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3daef3546432085a0a7fc652d2f4da8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3daef3546432085a0a7fc652d2f4da8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f05b013e4b7166cbc87c5a83d6a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db609c0ddcb9af21ddbf443d3e527cfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(3)在(2)的条件下,二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40a11d16dda3cd4b4d1bc0fdb48520c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0117fb72a34736a47f18fb0cb7fe66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d236129f58cf6f67f060393581f83298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40a11d16dda3cd4b4d1bc0fdb48520c.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1ff41ddea19ffb1102a81c404764d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
③若把图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1ff41ddea19ffb1102a81c404764d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次