1 . 综合与探究
如图,抛物线
与x轴交于A,B两点(点B在点A的左侧),与y轴交于点C,P是直线
上方抛物线上一动点.
的函数表达式.
(2)连接
,
,求
面积的最大值及此时点P的坐标.
(3)在(2)的条件下,若F是抛物线对称轴上一点,在抛物线上是否存在点Q,使以B,F,P,Q为顶点的四边形是平行四边形?若存在,请直接写出点Q的坐标;若不存在,请说明理由.
如图,抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb45121bac4b4daaa2915d1605782e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
(3)在(2)的条件下,若F是抛物线对称轴上一点,在抛物线上是否存在点Q,使以B,F,P,Q为顶点的四边形是平行四边形?若存在,请直接写出点Q的坐标;若不存在,请说明理由.
您最近一年使用:0次
2024-03-22更新
|
306次组卷
|
2卷引用:2024年山西省晋城市高平市多校中考一模数学试题
2 . 在平面直角坐标系
中,已知点A在y轴正半轴上.
![](https://img.xkw.com/dksih/QBM/2024/2/3/3425317898207232/3433592118992896/STEM/84ed52bb3ef74ed3be9b0004c0303173.png?resizew=496)
(1)如果四个点
中恰有三个点在二次函数
(a为常数,且
)的图像上.
①
:
②如图1,已知菱形
的顶点B、C、D在该二次函数的图像上,且
轴,求点D的坐标;
③如图2,已知正方形
的顶点B、D在该二次函数的图象上,点B、D在y轴的同侧,且点B在点D的左侧,设点B、D的横坐标分别为m、n,试探究
是否为定值.如果是,求出这个值;如果不是,请说明理由.
(2)已知正方形
的顶点B、D在二次函数
(a为常数,且
)的图像上,点B在点D的左侧,设点B、D的横坐标分别为m、n,直接写出m、n满足的等量关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://img.xkw.com/dksih/QBM/2024/2/3/3425317898207232/3433592118992896/STEM/84ed52bb3ef74ed3be9b0004c0303173.png?resizew=496)
(1)如果四个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9cada4eb21e2e889f2964019d727d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
②如图1,已知菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602f64f0c8a0fa105d583d698d0af3bd.png)
③如图2,已知正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
(2)已知正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c06778fd31160ebbb65153412cd30a.png)
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3 . 综合与探究:如图,在平面直角坐标系中,二次函数
的图像与x轴交于A,B两点,点A在点B的左侧,与y轴交于点C,点P是直线
下方抛物线上的一个动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/a12352ec-6614-4a24-9ef3-d933ced5fd9c.png?resizew=289)
(1)求点A,B,C的坐标;
(2)连接
,
,并将
沿y轴对折,得到四边形
.是否存在点P,使四边形
为菱形?若存在,求出此时点P的坐标;若不存在,请说明理由;
(3)当点P运动到什么位置时,四边形
的面积最大?求出此时点P的坐标和四边形
的最大面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcec07518b4cf0efd77c46c0b532783f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/a12352ec-6614-4a24-9ef3-d933ced5fd9c.png?resizew=289)
(1)求点A,B,C的坐标;
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee780a7d0e8811fb04d955304543fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85ef67d769dd41ac295abf1f53f4d4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85ef67d769dd41ac295abf1f53f4d4c2.png)
(3)当点P运动到什么位置时,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76981622e3684aca12435743b6a08a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76981622e3684aca12435743b6a08a8c.png)
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名校
4 . 综合与探究:
如图1,抛物线
与x轴交于A,B两点(点A在点B右侧),与y轴交于点C,点D是对称轴右侧第一象限内抛物线上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/e3c53881-8f1d-4a50-a105-a7990061ac94.png?resizew=350)
(1)求出点A,B,C的坐标;
(2)当
时,求出点D的坐标;
(3)在满足(2)的条件下,如图2,过点C作
,交直线
于点E,连接
.则四边形
是否为平行四边形?请说明理由.
如图1,抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c37a9d5e9cf50c9d4d4a15708d250.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/e3c53881-8f1d-4a50-a105-a7990061ac94.png?resizew=350)
(1)求出点A,B,C的坐标;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f245a6b13b431d9f5c03efd1d5a35e.png)
(3)在满足(2)的条件下,如图2,过点C作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec5d3a183594be47dd6e386d2c9d725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc1cbcd6d00f0c36bad8254297d9f33.png)
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5 . 综合与探究
如图,已知抛物线
经过点
,连接
,点M是
的中点,抛物线的对称轴交x轴于点F,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/b7156c06-6484-4c30-92e0-708d875a131c.png?resizew=162)
(1)求抛物线的解析式及n的值;
(2)点D在抛物线的对称轴上,若
的周长最小,则点D的坐标为______;
(3)求线段
的长及
的度数;
(4)若点N是x轴上一动点,则在坐标平面内是否存在点E,使以点F、M、N、E为顶点的四边形是正方形?若存在,请直接写出点E的坐标;若不存在,请说明理由.
如图,已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9215c03dba98988d38ee886aaddd3aac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/b7156c06-6484-4c30-92e0-708d875a131c.png?resizew=162)
(1)求抛物线的解析式及n的值;
(2)点D在抛物线的对称轴上,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
(3)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15cc8c2ee0dcfc2c51f4535712ba727d.png)
(4)若点N是x轴上一动点,则在坐标平面内是否存在点E,使以点F、M、N、E为顶点的四边形是正方形?若存在,请直接写出点E的坐标;若不存在,请说明理由.
您最近一年使用:0次
2024-01-01更新
|
123次组卷
|
2卷引用:黑龙江省齐齐哈尔市西部县区2023-2024学年九年级上学期期末数学试题
6 . 综合与探究
如图1,已知抛物线
与x轴交于
,
两点,与y轴交于点C,点D在线段
上,连接
,
,
.设点D的横坐标是m.
(2)如图2,过点D作
,交
于点P,用含m的代数式表示
的面积,并求出m为何值时,
的面积有最大值;
(3)已知Q为抛物线上一点,是否存在以B,C,D,Q为顶点的四边形是平行四边形?若存在,直接写出m的值;若不存在,请说明理由.
如图1,已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6c58de927edc61d50616aece7a8e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdd58ef950ddec3eb3ebf8e64f6228ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)如图2,过点D作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9470152120b29e1cfbdf5febc7a3167f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96645a3530e72d5d733d2c72147d340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96645a3530e72d5d733d2c72147d340.png)
(3)已知Q为抛物线上一点,是否存在以B,C,D,Q为顶点的四边形是平行四边形?若存在,直接写出m的值;若不存在,请说明理由.
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7 . 如图,抛物线
与
轴交于
,
两点,与
轴交于
点,对称轴直线
.
(2)如图1,直线
与抛物线,
轴分别交于点
,
,
于点
,点
在坐标平面内,若以
,
,
,
为顶点的四边形是平行四边形,求点
的坐标;
(3)如图2,若过(2)中点
的直线与抛物线交于
、
两点(点
在点
左侧),过
点的直线
与抛物线交于点
,探究直线
是否经过某个定点?若经过某定点,求该定点的坐标;若不经过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c33700c3358cbbd8db376f9f0613b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/ef00713e73b8357cc7900144f5505bc6.png)
(2)如图1,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/2fedc68f89087a183cc4aa8250e9ffbd.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/ac047e91852b91af639feec23a9598b2.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)如图2,若过(2)中点
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086de38541040351bba4a13bc3dc0080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902f97913e1af1e6c793f7edfe6b2114.png)
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8 . 如图,二次函数
(其中
)的图像与
轴交于
、
两点(点
在点
左侧),与
轴交于点
,连接
、
,点
为
的外心.
的坐标为 ,
;
(2)记
的面积为
,
的面积为
,试探究
是否为定值?如果是,求出这个定值;
(3)若在第一象限内的抛物线上存在一点
,使得以
、
、
、
为顶点的四边形是菱形,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1be7c1888168829b95f01a02b65ae13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.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/7f9e8449aad35c5d840a3395ea86df6d.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38c43d922840f5f7693007beeb62b34.png)
(3)若在第一象限内的抛物线上存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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9 . 已知,经过点
的抛物线
与x轴相交于点
及原点O.
(2)如图1,过点A作
轴,垂足为H,平行于y轴的直线交线段
于点Q,交抛物线于点P,当四边形
为平行四边形时,求
的度数;
(3)如图2,试探究:在抛物线上是否存在点C,使
?若存在,请求出直线
解析式;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56801f4cfc34a5f57cc7ad3b8dd74902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4218690b49de906a22dda72c578956.png)
(2)如图1,过点A作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7277dcfb480720f2f37413cb0d34d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5855605690a55ef41618357817f4fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3a3bf63440a2fdd769162516fb0e1c.png)
(3)如图2,试探究:在抛物线上是否存在点C,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f48fbb86f36b4c50069459ee01bae44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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10 . 综合与探究
如图,在平面直角坐标系中,抛物线
交
轴于点
和点
(点
在点
的左侧),交
轴于点
.
,
的坐标;
(2)如图1,连接
,点D在线段
上运动,过点D作
轴于点F,交抛物线于点E,连接
,当
的面积是
的面积的
时,求点D的坐标;
(3)如图2,点G的坐标是
,作直线
,点H在y轴的负半轴上运动,连接BH交直线
于点M,点N在该平面内运动,当以点
,H,M,N为顶点的四边形是菱形时,请直接写出点H的坐标.
如图,在平面直角坐标系中,抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc185742fc90c1a52d5c69bbec8f176.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/7f9e8449aad35c5d840a3395ea86df6d.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/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/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010989c488d7f0551c9f2aa8bba6bf1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70c3117b0dcdef8c20be9e48acb933e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
(3)如图2,点G的坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1778379caceaf83d690c8f49726508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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