Each interior angle of a regular polygon is two times its external angle Then the number of sides of...........

Quantitative Aptitude ( CCS) Geometry

Each interior angle of a regular polygon is two times its external angle. Then the number of sides of the polygon is :

Let the number of sides of a regular polygon be n.
∴ 180° – 360°/n
= 2 × 360°/n
180° × n – 360° = 720°
180° × n = 1080°
n = 6

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