如图,直线AD和CE是△ABC的两条对称轴,AD和CE相交于点O,OD与OE有什么数量关系?请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/f08b0ec8-dfe3-4bba-bfef-30d97ce57d6b.png?resizew=132)
19-20七年级下·陕西西安·期末 查看更多[6]
陕西省西安市碑林区2019-2020学年七年级下学期期末数学试题安徽省宿州市埇桥区2020-2021学年七年级下学期期末数学试题(已下线)广州卷04-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(广东广州专用)(已下线)专题13.3 轴对称(直通中考)-2023-2024学年八年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题2.3 轴对称图形与轴对称的性质(直通中考)-2023-2024学年八年级数学上册基础知识专项突破讲与练(苏科版)13.1轴对称
更新时间:2020-09-21 22:52:28
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【推荐1】如图,矩形ABCD的对角线AC和BD相交于点O,过点O的直线分别交AD和BC于点E、F,AB=2,BC=3,求图中阴影部分的面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/3/22ba21b7-ca28-4c7f-b973-67a6b1de7ac3.png?resizew=122)
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【推荐1】如图,已知
与
关于
所在的直线对称,延长
交
的延长线于点
,若
,且
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f710c97945718e9f38fc666e66ca98e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735bd70c2fa2bf51fd7aa448b20d0be1.png)
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【推荐2】如图,
是由
经过轴对称变换得到的,直线
是对称轴.
与
全等吗?
(2)分别找出点
关于直线
的对称点,如果点
在
内,那么点
关于直线
的对称点一定在
内吗?
(3)连接
,线段
与直线
有什么关系?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(2)分别找出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0520e9675bc1b416e8b8f01eb69fd13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(3)连接
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
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