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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