þÿ<html> <head> <meta http-equiv="Content-Language" content="pt"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <title>Deltaedros</title> </head> <body background="../eureka10.jpg" bgcolor="#CCFFFF"> <p align="center"><b><font face="Century Gothic">Deltaedros</font></b></p> <p><font face="Century Gothic">Existem apenas oito deltaedros convexos que aqui podes observar e manipular.</font></p> <div align="center"> <table border="1" style="border-collapse: collapse" width="81%" id="table1"> <tr> <td> <table border="1" style="border-collapse: collapse" width="311" id="table2"> <tr> <td width="151"> <applet code="Live.class" archive="../java/live.jar" align="middle" width="150" height="150" alt="Deltaedro"> <PARAM NAME="BGCOLOR" VALUE=#CCFFFF> <PARAM NAME="MAGNIFICATION" VALUE=1.2> <param name="input_file" value="deltaedros/deltaedro1.m"> </applet></td> <td width="152"> <applet code="Live.class" archive="../java/live.jar" align="middle" width="150" height="150" alt="Deltaedro"> <PARAM NAME="BGCOLOR" VALUE=#CCFFFF> <PARAM NAME="MAGNIFICATION" VALUE=1.2> <param name="input_file" value="deltaedros/deltaedro2.m" /> </applet></td> </tr> <tr> <td width="151"> <applet code="Live.class" archive="../java/live.jar" align="middle" width="150" height="150" alt="Deltaedro"> <PARAM NAME="BGCOLOR" VALUE=#CCFFFF> <PARAM NAME="MAGNIFICATION" VALUE=1.2> <param name="input_file" value="deltaedros/deltaedro3.m" /> </applet></td> <td width="152"> <applet code="Live.class" archive="../java/live.jar" align="middle" width="150" height="150" alt="Deltaedro"> <PARAM NAME="BGCOLOR" VALUE=#CCFFFF> <PARAM NAME="MAGNIFICATION" VALUE=1.2> <param name="input_file" value="deltaedros/deltaedro4.m" /> </applet></td> </tr> <tr> <td width="151"> <applet code="Live.class" archive="../java/live.jar" align="middle" width="150" height="150" alt="Deltaedro"> <PARAM NAME="BGCOLOR" VALUE=#CCFFFF> <PARAM NAME="MAGNIFICATION" VALUE=1.2> <param name="input_file" value="deltaedros/deltaedro5.m" /> </applet></td> <td width="152"> <applet code="Live.class" archive="../java/live.jar" align="middle" width="150" height="150" alt="Deltaedro"> <PARAM NAME="BGCOLOR" VALUE=#CCFFFF> <PARAM NAME="MAGNIFICATION" VALUE=1.2> <param name="input_file" value="deltaedros/deltaedro6.m" /> </applet></td> </tr> <tr> <td width="151"> <applet code="Live.class" archive="../java/live.jar" align="middle" width="150" height="150" alt="Deltaedro"> <PARAM NAME="BGCOLOR" VALUE=#CCFFFF> <PARAM NAME="MAGNIFICATION" VALUE=1.2> <param name="input_file" value="deltaedros/deltaedro7.m" /> </applet></td> <td width="152"> <applet code="Live.class" archive="../java/live.jar" align="middle" width="150" height="150" alt="Deltaedro"> <PARAM NAME="BGCOLOR" VALUE=#CCFFFF> <PARAM NAME="MAGNIFICATION" VALUE=1.2> <param name="input_file" value="deltaedros/deltaedro8.m" /> </applet></td> </tr> </table> </td> <td> <ul> <li> <p align="left"><font face="Century Gothic">Clicando no botão :</font></p></li> </ul> <blockquote> <blockquote> <p align="left"><font face="Century Gothic">esquerdo do rato podes rodar a representação do poliedro;</font></p> <p align="left"><font face="Century Gothic">direito e arrastando podes ocultar faces do poliedro.</font></p> </blockquote> </blockquote> <ul> <li><font face="Century Gothic">Movimentando o rato na vertical e pressionando a tecla <i>shift</i> alteras o zoom.</font></li> </ul> &nbsp;</td> </tr> </table> </div> <p><font face="Century Gothic">Freudenthal e van der Waerden, demonstraram em 1947 que existe uma infinidade de deltaedros, mas apenas oito deles são convexos. Um exemplo de um deltaedro não convexo é a <a href="estrelaoctangula.htm">estrela octângula</a>.</font></p> <p>&nbsp;</p> &nbsp; </body> </html>