Question 1

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Jambmaths question: 

How many sides has regular polygon having one of its interior angles as 150o

Option A: 

12

Option B: 

15

Option C: 

8

Option D: 

6

Jamb Maths Solution: 

Exterior angle of the regular polygon is180o – 150o = 30o (sum of angles on a straight line)The sum of total exterior angle = 360oThe number of sides be n$30n={{360}^{\text{o}}},\text{ }n=\frac{{{360}^{\text{o}}}}{{{30}^{\text{o}}}}=12$

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