In a given regular polygon, the ratio of the exterior angle to the interior angles is 1:3. How many side has the polygon?
A
40
B
5
C
6
D
8
E
12
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
Let x be the exterior angle; interior = 3x; but x + 3x = 180o
4x = 180o; x = 45
= \(\frac{360}{45}\) = 8
Source: Myschool Past Questions Archive (Record #23112)