SOLUTION: The ratio of the interior angle to its exterior angle is 3:1.Find the number of sides?
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Question 774703: The ratio of the interior angle to its exterior angle is 3:1.Find the number of sides?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
The sum of the interior angles is \,\cdot\,180)
The sum of the exterior angles is 
The ratio of the sum of the angles is the same as the ratio of the individual angles, so:
\,\cdot\,180}{360}\ =\ \frac{n\ -\ 2}{2})
But the ratio is 3:1, so
Solve for 
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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