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1 . 如图,在直角坐标系中,
各点坐标分别为
.
(1)在图中画出
关于
轴的对称图形
;
(2)在图中,若点
与点
关于一条直线成轴对称,则这条直线是 ① ,此时点
关于这条直线的对称点
的坐标为 ② ;
(3)连接
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf7773e17cbd2780a14db71f97e10d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/ed02029b-f445-4697-96fb-2ba603ecbed8.png?resizew=280)
(1)在图中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b84ef0f431be37389ab3a8b8794d65.png)
(2)在图中,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ebad8c963ab59d9315f3c28fc14fedb.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/39a52e26180930ad5b56a8a45f28a0f2.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7023b649fd84f998d741edfb6c209ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b0964982008e204b07802c1a4e4251d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7095891a1950617b3388a3b91de66ded.png)
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解题方法
2 . 在△ABC中,∠BAC=90°,点E为AC上一点,AB=AE,AG⊥BE,交BE于点H,交BC于点G,点M是BC边上的点.
(1)如图1,若点M与点G重合,AH=2,BC=
,求CE的长;
(2)如图2,若AB=BM,连接MH,∠HMG=∠MAH,求证:AM=2
HM;
(3)如图3,若点M为BC的中点,作点B关于AM的对称点N,连接AN、MN、EN,请直接写出∠AMH、∠NAE、∠MNE之间的角度关系.
(1)如图1,若点M与点G重合,AH=2,BC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df397b5075ae27f938b780936fd718c.png)
(2)如图2,若AB=BM,连接MH,∠HMG=∠MAH,求证:AM=2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(3)如图3,若点M为BC的中点,作点B关于AM的对称点N,连接AN、MN、EN,请直接写出∠AMH、∠NAE、∠MNE之间的角度关系.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/e35bdf5d-ca25-44cd-9323-e5a0205db9cc.png?resizew=683)
您最近一年使用:0次