RRB Assistant Loco Pilot and Technician Model Paper 17 with key

Question : 49 of 75

Marks: +1, -0

The difference between the interior and exterior angles of a regular polygon is 120°. The number of sides of polygon is:

Solution:

Interior + Exterior = 180° ....(i)
Interior − Exterior = 120° ....(ii)
By solving (i) & (ii)
2 Exterior = 60°
Exterior = 30°
n =

{360}/{30}

= 12

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