SOLUTION: if a polyhedron has 9 faces and 15 vertices, how many edges does it have?

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Question 439306: if a polyhedron has 9 faces and 15 vertices, how many edges does it have?
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
if a polyhedron has 9 faces and 15 vertices, how many edges does it have?


Euler's polyhedron formula is

 V - E + F = 2

15 - E + 9 = 2

    24 - E = 2

        -E = -22
     
         E = 22 
Edwin