May 13th, 2015, 05:42 AM  #1 
Newbie Joined: May 2015 From: Poland Posts: 3 Thanks: 0  Figure out a figure.
Hello. Does anyone know the name of this geometrical figure? (pic attached) Thanks in advance 
May 13th, 2015, 05:51 AM  #2 
Global Moderator Joined: Nov 2006 From: UTC 5 Posts: 16,046 Thanks: 938 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms 
That's called a bicone.

May 13th, 2015, 05:59 AM  #3 
Newbie Joined: May 2015 From: Poland Posts: 3 Thanks: 0 
Thank you very much. This is a bicone too then?

May 13th, 2015, 07:07 AM  #4 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,649 Thanks: 2630 Math Focus: Mainly analysis and algebra 
That's just a cone. Strictly speaking a cone comes in two parts joined at the apex like this  although in practice we usually talk of each half being a cone too.

May 13th, 2015, 07:49 AM  #5 
Newbie Joined: May 2015 From: Poland Posts: 3 Thanks: 0 
Thank you!


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