SOLUTION: If each interior angle of a regular polygon measures 120 degrees then what would be the equation to find the number of sides,n in this polygon?

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Question 387637: If each interior angle of a regular polygon measures 120 degrees then what would be the equation to find the number of sides,n in this polygon?
Found 2 solutions by MathLover1, Alan3354:
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

The internal+angles on an n sided polygon add up to %28n-2%29180 degrees.
So you want %28n-2%29180+=+n%2A120
=> 180%2An+-+360+=+120%2An
=> 60%2An+=+360
=> n+=+6

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The exterior angles are 60º (180 - 120)
The sum of exterior angles for ALL polygons is 360º
360/60 = 6 sides