Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Math Topics » geometry.pre-college.independent

Topic: Concave deltahedra with less than 12 faces
Replies: 3   Last Post: Feb 15, 2011 5:39 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Allan Turton

Posts: 33
From: Australia
Registered: 3/9/06
Concave deltahedra with less than 12 faces
Posted: Jun 5, 2006 7:09 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

I'm trying to keep a lesson on deltahedra within the bounds of the realistic. I know there is a finite number of convex deltahedra and an infinite number of concave deltahedra, but I'm having trouble trying to find out how many deltahedra there are with less than 12 faces (apart from trial and error). Does anyone know, or know of a reference with pictures?

Also, as a quick guess, I'm thinking that within this limited group of deltahedra there would only be ones with an even number of faces (for the same reason that there are only even-number faces for the convex deltahedra). Thoughts?



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.