图形的放大与缩小,位似变换

《图形的放大与缩小,位似变换》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、3.5图形的放大与缩小，位似变换Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.1.前面我们已经学习了图形的哪些变换？平移：平移的方向,平移的距离.旋转：旋转中心,旋转方向,旋转角度.相似：相似比.对称(轴对称与轴对称图形,中心对称与

2、中心对称图形)：对称轴,对称中心.注：图形这些不同的变换是我们学习几何必不可少的重要工具,它不但装点了我们的生活,而且是学习后续知识的基础.下面请欣赏如下图形的变换Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.请同学们仔细观察下列两

3、幅图有什么共同特点？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.位位位位图图图图似似似似形形形形Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0

4、.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.CDEEvaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientP

5、rofile5.2.0.0.Copyright2004-2011AsposePtyLtd.下面两副图是相似形吗？认真观察看它们还有什么特征？ABCDEFOMNEvaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.哇!果真奇特这不过是冰山一角

6、原来是一组景观呀没那么简单哦,它们是相似图形还有更奇特的呢!位似图形Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.大家好,今天我带你们去探秘相似图形王国最奇特的景观图形的放大与缩小Evaluationonly.Createdwith

7、Aspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.幻灯机的胶片和屏幕上的画面也形成一种位似关系．Evaluationonly.CreatedwithAspos