八年级数学(人教版)--轴对称

13.1.1轴对称第13章轴对称PleaseEnterYourDetailedTextHere,TheContentShouldBeConciseAndClear,ConciseAndConciseDoNotNeedTooMuchText人教版数学（初中）（八年级上）PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/前言学习目标1.能够识别简单的轴对称图形、成轴对称的图形及其对称轴、对称点,能指出轴对称图形和成轴对称的图形的对称轴。2.能说出轴对称图形与成轴对称的图形的区别与联系。重点难点轴对称图形及成轴对称的图形的区别与联系。PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/观察这些图像有什么共同特点？观察PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/1.请同学们准备一张纸；2.首先对折纸；3.展开你的想象力，在纸上画出你想要画的图案；4.然后沿线条剪下；5.把纸张展开，欣赏你的杰作。动手操作PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/观察PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/轴对称图形如果一个平面图形沿着一条直线折叠，直线两旁的部分能够完全重合，那么就称这个图形为轴对称图形。这条直线就是他的对称轴轴对称图形对称轴PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/你能举出一些轴对称图形的例子吗？举例PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/下面每对图形有什么共同点？每一对图形沿着虚线折叠，左边的图形都能与右边的图形重合。思考PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/把一个图形沿着某一条直线折叠，如果它能够与另一个图形重合，那么称这两个图形关于这条直线（成轴）对称。这条直线叫做对称轴。折叠后重合的点叫对应点，也叫对称点。对称轴ABCA’C’B’对称点成轴对称、对称轴、对称点PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/轴对称图形两个图形成轴对称区别联系一个特殊图形两个图形的特殊关系沿一条直线折叠,直线两旁的部分能够互相重合。都有对称轴。把成轴对称的两个图形看成一个整体，它就是一个轴对称图形；把一个轴对称图形分成两个图形，这两个图形关于这条直线对称。小结PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om/jianli/试卷下载：om/shiti/教案下载：om/jiaoan/手抄报：om/shouchaobao/PPT课件：om/kejian/语文课件：om/kejian/yuwen/数学课件：om/kejian/shuxue/英语课件：om/kejian/yingyu/美术课件：om/kejian/meishu/科学课件：om/kejian/kexue/物理课件：om/kejian/wuli/化学课件：om/kejian/huaxue/生物课件：om/kejian/shengwu/地理课件：om/kejian/dili/历史课件：om/kejian/lishi/已知图中的两个三角形关于直线MN对称，点A′、B′、C′分别是点A、B、C的对称点，线段AA′与直线MN有什么关系？BB′，CC′与直线MN呢？MABCC′A′线段AA′被直线MN垂直平分.直线MN叫做线段AA′的垂直平分线.N思考PPT模板：om/moban/PPT素材：om/sucai/PPT背景：om/beijing/PPT图表：om/tubiao/PPT下载：om/xiazai/PPT教程：om/powerpoint/资料下载：om/ziliao/个人简历：om