p41'm'm versus p4'mm'
Here the task is to distinguish p4'm'm from p4'mm' . Each
has negating 4-centers; each has some positive and some negative mirrors.
Communications in Visual Mathematics, vol 1, no 1, August 1998.
Copyright © 1998,
The Mathematical Association of America.
All rights reserved.
Created: 08 Jul 1998 ---
Last modified: 18 Aug 1998 23:59:59
Comments to: CVM@maa.org
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![[p4'm'm]](pix/p4pmpm.jpg)
![[p4'mm']](pix/p4pmmp.jpg)