已知在
中,对角线交于点O,将
绕点O按顺时针方向旋转α角
得到
,连接
.
(1)如图1,当
且
时,
与
的数量关系是___________.
(2)如图2,当
且
时,(1)中的结论是否成立?若成立,请写出证明过程,并直接写出当
,
时,
的长;若不成立,请说明理由.
(3)如图3,当
,
时,
的长为___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79628b9c258a062a863a71a2677fb348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2073303f871a816869bda1fde4a69a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc869125145c0139d92490a41bd3918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f956156a8f36969ce5252e9c1da0b76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/11/063c9e8d-f8ff-4174-a489-3162bde87e8b.png?resizew=373)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a320a6a242be91347d1b241f6313251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495be6a6b940e8affe38f2bcdee246b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)如图3,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00192010c79abdbf32b4d18ff13c4fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
2023·安徽蚌埠·一模 查看更多[3]
2023年安徽省蚌埠市五河县临北初级中学中考一模数学试题(已下线)专题14 四边形综合题(针对20、22、23题) -学易金卷:五年(2019-2023)中考1年模拟数学真题分项汇编(安徽专用)(已下线)2023年安徽一模几何综合4
更新时间:2023-06-02 14:13:14
|
相似题推荐
解答题-证明题
|
较难
(0.4)
名校
【推荐1】如图,在正方形
中,点M是边
上的一点(不与B、C重合),将线段
绕点A顺时针旋转
得到
,连接
、
、
,
与边
交于点E,与
相交于点O.
(1)求证:
;
(2)当
平分
时,求证:
;
(3)当
时,求
的值.
![](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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/195d8398-f9a0-4763-b02e-b9a6f979e5a5.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ef6e64afc0d4e5c1a7b57581cf7456.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c08af7b2a108bc62fdde689d07d750.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c478f15cd513b155744330eb6fe81d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42ac2e365ccda4c58072c9fc51ccfac.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,在平面直角坐标系中,点O为原点,直线
分别交x轴,y轴于点C,A,点B在x轴的负半轴上,且
,作直线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/edfb464d-c39a-47b2-be75-b4b31edcbe10.png?resizew=546)
(1)求直线
的解析式;
(2)点P在线段
上(不与点A重合),过点P作
轴交
于点Q,设点P的横坐标为t,线段
的长为d,求d与t之间的函数关系式(不要求写出自变量t的取值范围);
(3)在(2)的条件下,在直线
的右侧以线段
为斜边作等腰直角
,连接
,以线段
为直角边作等腰直角三角形
,且
,且点E在直线
的右侧,则点E的坐标为__________.(用含有t的代数式表示)
(4)在(2)、(3)的条件下,若
,则
_____________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812eed46a589bde8b7c78a81a8cf9b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1abc338fc9eedf5bc556c9425b783ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/edfb464d-c39a-47b2-be75-b4b31edcbe10.png?resizew=546)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)点P在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d928238e1f1677f5f20ed62da87eb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(3)在(2)的条件下,在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820567942aa98b2feaaa017fcb7790df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2355a0a24ab1aaf3c3c19c8e9f27fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
(4)在(2)、(3)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ea5671d5688caea6038ffd55d58ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
真题
名校
【推荐1】如图,矩形OABC在平面直角坐标系xOy中,点A在x轴的正半轴上,点C在y轴的正半轴上,OA=4,OC=3,若抛物线的顶点在BC边上,且抛物线经过O,A两点,直线AC交抛物线于点D.
![](https://img.xkw.com/dksih/QBM/2013/9/28/1573688925716480/1573688931966976/STEM/89e8a33c74e647bf9b68002701e98dd9.png?resizew=234)
(1)求抛物线的解析式;
(2)求点D的坐标;
(3)若点M在抛物线上,点N在x轴上,是否存在以A,D,M,N为顶点的四边形是平行四边形?若存在,求出点N的坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2013/9/28/1573688925716480/1573688931966976/STEM/89e8a33c74e647bf9b68002701e98dd9.png?resizew=234)
(1)求抛物线的解析式;
(2)求点D的坐标;
(3)若点M在抛物线上,点N在x轴上,是否存在以A,D,M,N为顶点的四边形是平行四边形?若存在,求出点N的坐标;若不存在,请说明理由.
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】如图1,平行四边形ABCD中,AB⊥AC,AB=6,AD=10,点P在边AD上运动,以P为圆心,PA为半径的⊙P与对角线AC交于A,E两点.
(1)线段AC的长度是 .
(2)如图2,当⊙P与边CD相切于点F时,求AP的长;
(3)不难发现,当⊙P与边CD相切时,⊙P与平行四边形ABCD的边有三个公共点,随着AP的变化,⊙P与平行四边形ABCD的边的公共点的个数也在变化,若公共点的个数为4,直接写出相对应的AP的值的取值范围 .
(1)线段AC的长度是 .
(2)如图2,当⊙P与边CD相切于点F时,求AP的长;
(3)不难发现,当⊙P与边CD相切时,⊙P与平行四边形ABCD的边有三个公共点,随着AP的变化,⊙P与平行四边形ABCD的边的公共点的个数也在变化,若公共点的个数为4,直接写出相对应的AP的值的取值范围 .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/2ea496b1-94e0-452d-856c-b4b8f5abdb48.png?resizew=477)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】这平面直角坐标系中,四边形
是矩形,点
,点
,点
.以点
为中心,顺时针旋转矩形
,得到矩形
,点
,
,
的对应点分别为
,
,
.
落在
边上时,点
的坐标为______.
(2)如图2,当点
落在线段
边上时,
与
交于点
.
①求证:
;
②求点
的坐标;
(3)在(1)的条件下,平面内有一点
,若以
、
、
、
为顶点的四边形是平行四边形,直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de876a6f077935f6f99ca064b462c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1a9821a00b71f6b7d7a76d91b3f810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c905c723e30f28088fd7f7dc09ef1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76fc88ea5357b675c01e93c62fea338d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de876a6f077935f6f99ca064b462c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b78d48bd70b977715edc09b1ca98a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)如图2,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80fd1dcbfdfa84e0fad038956a946.png)
②求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(3)在(1)的条件下,平面内有一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】综合与实践
在综合与实践课上,老师让同学们以“等腰三角形的剪拼”为主题开展数学活动,如图1,在
中,
,
. 将
沿
边上的中线
剪开,得到
和
.
操作发现:
(1)①乐学小组将图1中的
以点D为旋转中心,按逆时针方向旋转,使得
,得到图2,
与
交于点E,试判断四边形
的形状,并说明理由.
②缜密小组将图1中的
沿
方向平移,
与
交于点M,
与
交于点N,得到图3,则四边形
的形状 .
实践探究:
(2)缜密小组又发现,当②中线段
的长为
时,图3中的四边形
会成为正方形,求a的值.
(3)创新小组又把图1中的
放到如图4所示的位置,点A的对应点
与点D重合,点D的对应点
在
的延长线上,再将
绕点D逆时针旋转到如图5所示的位置,
交
于点P,
交AB于点Q,
,此时线段
的长是
.
在综合与实践课上,老师让同学们以“等腰三角形的剪拼”为主题开展数学活动,如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011586f46c6f0c37d0f2e85fb69bb4c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9d0d90bf492735a174a88df5704f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
操作发现:
(1)①乐学小组将图1中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060a3e679c305443dff1eda2b2020fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cfad1ba71a78d8f415335cde2f8c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195f3a33bba0ea720fbc730bb25b1880.png)
②缜密小组将图1中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284750727aa2c32b2477d126daefb329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cfad1ba71a78d8f415335cde2f8c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f647701fa4bdc396bf4c743a597f17be.png)
实践探究:
(2)缜密小组又发现,当②中线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18703d241f6fe0a0dedcc815603322fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f647701fa4bdc396bf4c743a597f17be.png)
(3)创新小组又把图1中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec75f5ccd5756d5b787c061c831dffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288abe01824f42cfe725509af5aec4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe0dd53aa976fde2315d6858242787ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图.已知
是
的直径,弦
于点
,点
为
上一点,连结
并延长交
的延长线于点
,连结
.
.
(2)若
,
①求
的值;
②当
与
的面积之比为
时,求
的值.
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.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/82f95817a8ecb0cdea4e20bfd9911ad1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1a31809b434937636e0d1c5302b763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eaf2463172261402f00c23e66e3a8b0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b4939e128f0dd11277cb3e0681ce3e.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c38787a057479c27d15eee5a2406759.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4364713d318c134525c76816cac75f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee459dffca4214484b32b830a0fc637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0096a07d16ef022944a5943bafd3500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6169a1f4d6512e881a284d7fe137343f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/872df0167d5a31c38ec5091f221207bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daac105227c1e87de0415d546de89860.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】如图
所示,在平面直角坐标系
中,直线
与
轴交于点
,与
轴交于点
,抛物线
经过
,
两点,与
轴的另一交点为点
.
(1)求抛物线的函数表达式;
(2)点
为直线
下方抛物线上一动点.
①如图2所示,直线
交线段
于点
,求
的最小值;
② 如图3所示,连接
过点
作
于
,是否存在点
,使得
中的某个角恰好等于
的2倍?若存在,求点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f0c0aa4d3777dfd5cfca76e713e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d8bf01092d97f3c2d199f25bda462b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求抛物线的函数表达式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
①如图2所示,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e09fe01cc68cc6bcee5e4541141650b.png)
② 如图3所示,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62fec86a6fa67dacc92300c878ff03af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e393d1699fb6b046fc10dc33e6864b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/4/7bd8ba76-51b9-4d5f-9fe5-9b07fd1780ea.png?resizew=559)
您最近一年使用:0次