Question
How many sides does a regular polygon have if each interior angle measures 150°?
This question was previously asked in
RRB NTPC 2025 Graduate CBT 2 Question Paper PDF (10-Jul-2026) (Shift 1)
The correct answer is
12 sides
Each interior angle of the regular polygon is 150°, so each exterior angle is \(180^\circ - 150^\circ = 30^\circ\).
The number of sides equals \(\dfrac{360^\circ}{30^\circ} = 12\).
Hence, the polygon has 12 sides.
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