不好意思我没有说清楚

乌木

<DIV class=t_msgfont id=postmessage_59645>
<P>二阶立方体魔方“坍缩”为二阶四面体魔方的对应关系大致如下图所示，前者的四个三面角块变为后者的四个三面角块，前者的另四个角块分别变成“金字塔”的四个三角形的面心块，只有一个色面了。</P>
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<P><SPAN id=attach_11111 onmouseover="showMenu(this.id, 0, 1)" style="DISPLAY: none; LEFT: 213px; POSITION: absolute; TOP: 6841px"><IMG src="http://bbs.mf8-china.com/images/Beijing2008/attachimg.gif" border=0></SPAN> <IMG onmouseover="attachimginfo(this, 'attach_11111', 1);attachimg(this, 'mouseover')" onmouseout="attachimginfo(this, 'attach_11111', 0, event)" alt="" src="http://bbs.mf8-china.com/attachments/month_0711/20071118_56a7daac6819245cdb4eHtoeqtvFCec5.gif" onload="attachimg(this, 'load')" border=0> </P>
<DIV class=t_attach id=attach_11111_menu style="DISPLAY: none; WIDTH: 288px; POSITION: absolute; HEIGHT: 44px">&nbsp;<A href="http://bbs.mf8-china.com/attachment.php?aid=11111&amp;nothumb=yes" target=_blank><STRONG>立方体“坍缩”为四面体的示意.GIF</STRONG></A> (10.21 KB)<BR>
<DIV class=t_smallfont>2007-11-18 12:30</DIV></DIV>
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乌木

例子见：&nbsp; <SPAN id=thread_433><A href="http://bbs.mf8-china.com/viewthread.php?tid=433&amp;extra=page%3D1"><STRONG><FONT color=blue>金字塔魔方的复原</FONT></STRONG></A></SPAN> 一帖的第11楼。

[ 本帖最后由 乌木 于 2007-11-18 20:09 编辑 ]

柯哀之恋

没图吗，谁知道你说的是神马？