In a regular polygon of n sides, each interior angle is 144o. Find n
A
12
B
11
C
10
D
8
E
6F
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Formula for an interior angle of a polygon is (2n - 4) x 90
(2n - 4) x 90 = 144n
180n - 360 = 144n
180n - 144n = 360
36n = 360
n = \(\frac{360}{36}\)
= 10
Source: Myschool Past Questions Archive (Record #32532)