Each of the interior angle of a regular polygon is 162o. How many sides has the polygon?
- 8
- 12
- 16
-
20
The correct answer is: D
Explanation
\(\frac{(n - 2)180}{n}\) = 162 (where n = no. of sides)162n = 180n - 360
162n - 180n = -360
-18n = - 360
n = \(\frac{360}{18}\)
n = 20