【2017年整理】5.1轴对称现象.ppt

轴对称现象;;中秋明月;湖光山色;;轴对称现象;;想一想： ;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.; 把一个饼子分成两个相等的半圆饼，有多少种分法？;;想一想：0-9十个数字中，哪些是轴对称图形？ 0 1 2 3 4 5 6 7 8 9;想一想：下列英文字母中，哪些是轴对称图形？; 你知道吗？中国的汉字也十分注重对称美。;对照：右面的图形对称么？;你 能 说 出 其 中 的 道 理 吗 ？;试一试;跟我学扎纸;请大家再看看右面两组图形;;如果两个平面图形沿一条直线对折后能够完全重合，那么称这两个图形成轴对称。;;小组讨论：;请你试一试，动动手，“印墨痕”;１、观察下列各种图形，判断是不是轴对称图形？ ;2、下列平面图形中，不是轴对称图形的是： （ ）;3、在汉字“商品数量“中，是轴对称图形的字是___________。 4、在字母H、P、R、S、Q、A中是轴对称图形的是_________。 ;6、下面哪一个选项的右边图形与左边图形成轴对称？;7、在图形中标出点和关于直线的对称点;8、正多边形都是轴对称图形， 请填写下表： ;;;;;;玩一玩: 推理游戏 ;通过今天的学习，你有什么收获与体会？;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyrigh