1 . 已知抛物线与
轴交于点
、
,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/f8357a16-4b5e-48cd-980e-0eb706a58e0e.png?resizew=463)
(1)求抛物线解析式;
(2)如图①,若点
是第一象限内抛物线上一动点,过点
作
于点
,求线段
长的最大值
(3)如图②,若点
是抛物线上另一动点,点
是平面内一点,是否存在以点
、
、
、
为顶点,且以
为边的矩形,若存在,求出点
的坐标;若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c052d7af2f98d95bac8725b608fba0fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/f8357a16-4b5e-48cd-980e-0eb706a58e0e.png?resizew=463)
(1)求抛物线解析式;
(2)如图①,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65334978b0519b379910dfc4acf8344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(3)如图②,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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5卷引用:贵州省遵义市2022-2023学年九年级上学期期末数学试题
2 . 如图1,在
中,
,
,
,点
分别是边
的中点,连接
.将
绕点
逆时针方向旋转,记旋转角为
.
当
时,
______;
当
时,
______.
(2)拓展探究
试判断:当
时,
的大小有无变化?请仅就图2的情形给出证明.
(3)问题解决
绕点
逆时针旋转至
三点在同一条直线上时,请直接写出线段
的长______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887721a843b2dc8e947cc42d09868e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7e8c4e8015bc1a44a89460e1dc0d63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce24b781c66474602b5ba6627241531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd284be60584dfae454b1a125468947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce24b781c66474602b5ba6627241531.png)
(2)拓展探究
试判断:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcfbe55f659e4b597bb81680b20db4c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/625000a942ec1b76a1176284be6d6520.png)
(3)问题解决
![](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/00045940432a531a8f07034032d9248d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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29卷引用:贵州省贵阳市贵安区高峰中学2022-2023学年九年级上学期期中数学试题
贵州省贵阳市贵安区高峰中学2022-2023学年九年级上学期期中数学试题2020年内蒙古省包头市中考数学4月模拟试题2020年山东省济南市平阴县中考数学一模试题2020年河南省郑州市市直学校中考数学一模试题2020年山东省德州市乐陵县九年级数学中考三模试题(已下线)【万唯原创】河南省中考数学-河南缺题-类比探究中(已下线)手拉手模型河南省南阳市镇平县2020-2021学年九年级上学期期中数学试题山东省菏泽市单县2020-2021学年九年级下学期期中数学试题(二模)(已下线)第二十三章 图形的变换(能力提升)-2021-2022学年京改版九年级数学下册单元测试卷(已下线)专题27.17+相似三角形的性质(培优篇)(专项练习)-2021-2022学年九年级数学下册基础知识专项讲练(人教版)山东省济南市平阴县2021-2022学年九年级上学期期末数学试题山东省济南市济南中学2021-2022学年 九年级上学期数学期中考试卷(已下线)专题19 以三角形为载体的几何综合探究问题河南省郑州市中原区2022-2023学年九年级上学期期中数学试题山东省济南市天桥区2022-2023学年九年级上学期期中数学试题河南省郑州市第二中学2022-2023学年九年级上学期期中数学测试卷河南省郑州市二七区第二初级中学2022-2023学年九年级上学期期中数学试题陕西省宝鸡市凤翔区2022-2023学年九年级上学期期末数学试卷2023年山东省东营市东营区实验中学(五四制)九年级中考一模数学试题(已下线)2023年陕西省延安市中考数学第一次模拟考试卷变式题21-26题(已下线)专题16 几何综合压轴-学易金卷:2023年中考数学一模试题分项汇编(山东专用)河南省驻马店市平舆县完全中学2022-2023学年九年级下学期3月月考数学试题山东省东营市广饶县李鹊镇初级中学2022-2023学年八年级下学期第二次阶段限时作业数学试题湖北省武汉市培英中学2021-2022学年九年级下学期月考数学试题河北省石家庄市第八十一中学2023-2024学年九年级上学期期中数学试题(已下线)专题4.46 相似三角形几何模型(旋转模型)(培优练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)山东省济南市商河县四校2023-22024学年九年级上学期期中考试数学试题2024年内蒙古包头市中考数学模拟试题
3 . 如图,已知抛物线
经过两点
,
,C是抛物线与y轴的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/619b8414-d035-4d59-9685-41dd9181e921.png?resizew=88)
(1)求抛物线的解析式;
(2)点N在y轴正半轴上运动,是否存在点N使得
与
相似,如果存在,请求出点N的坐标;
(3)点P的横坐标为m,且在平面直角坐标系第一象限内的抛物线上运动,设△PBC的面积为S,求S关于m的函数表达式和S的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2588ccdfad869009db135f4d2da6e8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbdef5d0c05acbf63fa72fa85c5bb45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/619b8414-d035-4d59-9685-41dd9181e921.png?resizew=88)
(1)求抛物线的解析式;
(2)点N在y轴正半轴上运动,是否存在点N使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40bd8b071b24e92e0b1fd38101ffe400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
(3)点P的横坐标为m,且在平面直角坐标系第一象限内的抛物线上运动,设△PBC的面积为S,求S关于m的函数表达式和S的最大值.
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122次组卷
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3卷引用:贵州省铜仁市玉屏侗族自治县2022-2023学年九年级上学期第二次月考数学试题
名校
4 . 如图,在
中,
,
,
,D、E分别是边
、
上的两个动点,且
,P是
的中点,连接
,
,则
的最小值为 __ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d2eae98e1683fbb9533584450dd696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a19338598965bb3856cdd0236bbf694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fdad3a4a5c6d83e9879d1a9e40bfd7e.png)
![](https://img.xkw.com/dksih/QBM/2022/12/13/3130003860676608/3142278101614592/STEM/a8873d724ad94131bcfe7f0d0208764a.png?resizew=103)
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8卷引用:贵州省黔南布依族苗族自治州长顺县2021-2022学年九年级下学期11月月考数学试题
贵州省黔南布依族苗族自治州长顺县2021-2022学年九年级下学期11月月考数学试题江苏省南京市玄武区2019~2020学年九年级上学期期末数学试题江苏省南京市玄武区2019-2020学年九年级上学期期末数学试题(已下线)专题20 和阿波罗尼氏圆有关的最值问题-【微专题】2022-2023学年九年级数学上册常考点微专题提分精练(浙教版)(已下线)重难点06 六种几何综合模型 -2022-2023学年九年级数学考试满分全攻略(人教版)(已下线)专题18 阿氏圆小题-【微专题】2022-2023学年九年级数学下册常考点微专题提分精练(人教版)(已下线)专题18 阿氏圆小题-【微专题】2022-2023学年九年级数学下册常考点微专题提分精练(苏科版)陕西省西安市铁一中学2023-2024学年九年级上学期开学考试数学试题
5 . 如图,点
在x轴上,且
,分别过点
作y轴的平行线与反比例函数
(x>0)的图象分别交于点
,分别过点
作x轴的平行线,分别于y轴交于点
,连接
,那么图中从左到右第2022个阴影部分的面积为 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e25993147b4ace41b81de9e55b70f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee85a2a3f3ef7bd631b4d7a340fef3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e25993147b4ace41b81de9e55b70f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef854dfcbba9b7dedc1bc52f6332b011.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88860c103bf8ab8e11c5160584868202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88860c103bf8ab8e11c5160584868202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f1dc9c4dbad62ef6503c9b2f2bdfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00c1a8722f2fc2a33c4c05e23e4d444.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/e05bb4f8-01a4-4735-9396-1a69e2d6f0f1.png?resizew=199)
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6 . 如图,在正方形
中,以
为边作等边
,延长
,
分别交
于点E,F,连接
、
,
与
相交于点H,给出下列结论:①
;②
;③
;④
.其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/5c32f67d-0ef5-421f-b775-805e0ea913d8.png?resizew=121)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5432fd3eb6a03d81326d009bcca48e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a6ff9f48e93a63250372feab8ba610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf496016ba7c7d4a6ff908f0e540dd42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cbbb9a85c095ef7d63dfb3dd0e8b972.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/5c32f67d-0ef5-421f-b775-805e0ea913d8.png?resizew=121)
A.①②③④ | B.②③ | C.①②④ | D.①③④ |
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2022-12-09更新
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105次组卷
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2卷引用:贵州省铜仁市沿河土家族自治县2022-2023学年九年级上学期期中数学试题
7 . 如图,
中,D是
边上一点,
交
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/83168303-dedc-479f-b386-cfc43d46b8f6.png?resizew=501)
(1)过点E作
交
于点F,如图1,四边形
的面积为S,
的面积为
,
的面积为
;若
,
,
与
之间的距离为3,则
______,
______,
______;
(2)在图1中,若
,
,
与
之间的距离为h.求证:
;
(3)如图2,已知点
都在
的边上,且四边形
是平行四边形.若
,
,
的面积分别为2,3,5,试利用(2)中的结论求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/83168303-dedc-479f-b386-cfc43d46b8f6.png?resizew=501)
(1)过点E作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25eff69a4a0dc7a7ab183843303d333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3d90ff61a9581e1705c8b9845570bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faffe3765c15f53305516895aa595a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56512504254ab7f574a717dd6830fb33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3dabace330ccdd9755fbcf32d5d6343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b625192d7398634a02ea24fa78ed87.png)
(2)在图1中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f56ba6d9a341870c55ebd985992738dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b312792aa89c6f8782093966294a8d76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d9825169ddae64ada5b7cee2fc8238.png)
(3)如图2,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf047c2efeca754fc37160b45782821a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a236a6ef0151937b01e3678826e3675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
8 . 如图,
分别是边长为3和2的正方形,G在
上,
三点在同一直线上,连接DE交GF于M,连接BG并延长交DE于H,下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/c9cd2272-b5d6-4e24-8383-a7f433800ddc.png?resizew=196)
①
②
③
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62baa0357468e4fbe1c7061fbc5ae3d5.png)
其中正确的结论个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d4662199b76a3e548ec59aed25f5460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8671c0fd945295871b16490e052f2e43.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/c9cd2272-b5d6-4e24-8383-a7f433800ddc.png?resizew=196)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b555a0bb6b5132ecfb9cae3769912c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db529de474a033a56c138825d0b0c3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c96d28f4128c9150975a7d4dc3dff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62baa0357468e4fbe1c7061fbc5ae3d5.png)
其中正确的结论个数有( )
A.1个 | B.2个 | C.3个 | D.4个 |
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9 . 【问题情境】如图1,在等腰直角三角形ABC中,∠ACB=90°,F是AC边上一动点(点F不与点A,C重合),以CF为边在△ABC外作正方形CDEF,连接AD,BF.
![](https://img.xkw.com/dksih/QBM/2022/10/2/3079017503129600/3079142894583808/STEM/91564499df92484c8938bddfbdcce5ae.png?resizew=453)
(1)【探究展示】①猜想:图1中,线段BF,AD的数量关系是 ,位置关系是 .
②如图2,将图1中的正方形CDEF绕点C顺时针旋转α,BF交AC于点H,交AD于点O,①中的结论是否仍然成立?请说明理由.
(2)【拓展延伸】如图3,将【问题情境】中的等腰直角三角形ABC改为直角三角形ABC,∠ACB=90°,正方形CDEF改为矩形CDEF,连接BF并延长,交AC于点H,交AD于点O,连接BD,AF.若AC=4,BC=3,CD=
,CF=1,求
的值.
![](https://img.xkw.com/dksih/QBM/2022/10/2/3079017503129600/3079142894583808/STEM/91564499df92484c8938bddfbdcce5ae.png?resizew=453)
(1)【探究展示】①猜想:图1中,线段BF,AD的数量关系是 ,位置关系是 .
②如图2,将图1中的正方形CDEF绕点C顺时针旋转α,BF交AC于点H,交AD于点O,①中的结论是否仍然成立?请说明理由.
(2)【拓展延伸】如图3,将【问题情境】中的等腰直角三角形ABC改为直角三角形ABC,∠ACB=90°,正方形CDEF改为矩形CDEF,连接BF并延长,交AC于点H,交AD于点O,连接BD,AF.若AC=4,BC=3,CD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c080849031f72fdc2bd0abf00d9cba32.png)
您最近一年使用:0次
2022-10-02更新
|
216次组卷
|
3卷引用:贵州省安顺市开发区2021-2022学年九年级下学期05月月考数学试题
名校
10 .
中,
,
,点
为直线
上一动点
点
不与
,
重合
,以
为边在
右侧作菱形
,使
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/57c69b52-779e-4094-bfd7-a72723d6c0c2.png?resizew=463)
(1)观察猜想:如图
,当点
在线段
上时,
与
的位置关系为:______.
,
,
之间的数量关系为:______;
(2)数学思考:如图
,当点
在线段
的延长线上时,结论
,
是否仍然成立?若成立,请给予证明;若不成立,请你写出正确结论再给予证明.
(3)拓展延伸:如图
,当点
在线段
的延长线上时,设
与
相交于点
,若已知
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5deb742445686d17a88e979c95dacca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/57c69b52-779e-4094-bfd7-a72723d6c0c2.png?resizew=463)
(1)观察猜想:如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6c6e83c3df632e1e94fc8f0f529cd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50987e5e387450c63da0d6e528e873fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(2)数学思考:如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
(3)拓展延伸:如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71622531dfa894f21b2da123d020d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
您最近一年使用:0次
2022-09-19更新
|
181次组卷
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6卷引用:2023年贵州省铜仁市中考三模数学模拟试题