From: Brittany <kopsb37@uwosh.edu>
To: Teacher2Teacher Service
Date: Dec 11, 2007 at 00:19:28
Subject: Euler's formula

I have a student who is using Euler's formula to determine the 
number of panels a builder will need to construct a polyhedral dome that 
is made out of 40 steel pipes and 25 connecting joints. He explains to me 
that he is thinking the steel pipes are the faces and the connection 
joints are vertices. He concludes that the number of panels the builder 
needs equals 40+25=63. Is his reasoning correct? What follow-up question 
could I ask to make certain he understands the use of Euler's formula? 

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