长方体和正方体表面的展开图演示教学.ppt

长方体和正方体表面的展开图长方体和正方体表面的展开图单击页面即可演示Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.一个正方体纸盒，像下面的样子沿着画有红线的棱剪开，就可以得到它的展开图。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.一个正方体纸盒，像下面的样子沿着画有红线的棱剪开，就可以得到它的展开图。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.一个正方体纸盒，像下面的样子沿着画有红线的棱剪开，就可以得到它的展开图。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.一个正方体纸盒，像下面的样子沿着画有红线的棱剪开，就可以得到它的展开图。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.一个正方体纸盒，像下面的样子沿着画有红线的棱剪开，就可以得到它的展开图。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.拿一个长方体纸盒，沿着一些棱剪开，看看它的展开图。你能从展开图中找到长方体3组相对的面吗？Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.1.把长方体纸盒剪开，得到它的展开图。上面前面右面前面上面右面你能标出长方体的下面、后面和左面吗？Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.2.下面哪些图形沿虚线折叠后能围成正方体？先想一想，再照样子剪一剪、折一折。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.(A)(B)(D)(C)(E)相对的面完全相同，相对的面完全隔开。相对的面完全相同，相对的面完全隔开。(A)(B)(A)(D)(C)(E)(D)(C)(E)(A)长方体展开图相对的面有怎样的规律？长方体展开图相对的面有怎样的规律？(D)(C)(E)(B)(A)(D)(C)(E)练习题练习题Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.观察正方体展开图，说一说哪两个面是相对的，并说说有什么规律？正方体的展开图有多少种形式？练习题练习题Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.“一四一一四一”型型Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.“二三一二三一”型型“三三三三”型型“二二二二二二”型型Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.下面是一个正方体的展开图，当折成一个纸盒时，A点与哪些点重合？A AB BC CD DE EF FG GH HI IJ JK K练习题练习题Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.一个长方体展开后有两个面的形状如一个长方体展开后有两个面的形状如下图。请你继续画出其他四个面。下图。请你继续画出其他四个面。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.谢谢 谢谢Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.