Question 11

Jambmaths question: 

Find the number of sides of a regular polygon if the size of each interior is 150o 

Option A: 

9

Option B: 

12

Option C: 

10

Option D: 

14

Jamb Maths Solution: 

Each exterior angle will be 180o – 150o =30o

Sum of all exterior angle will be 360o

Therefore, 30on = 360o (n is the number of sides of the polygon)

n = 12 

Year of Exam: