Jambmaths question:
How many sides has a regular polygon whose interior angle is 135o each
Option A:
10
Option B:
12
Option C:
9
Option D:
8
Jamb Maths Solution:
Exterior angle of the regular polygon is180o – 135o = 45o (sum of angles on a straight line)The sum of total exterior angle = 360oThe number of sides be n$30n={{360}^{\text{o}}},\text{ }n=\frac{{{360}^{\text{o}}}}{{{45}^{\text{o}}}}=8$
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