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Find the number of sides of a regular polygon whose each exterior angle measures 40°.
1. 7
2. 8
3. 9
4. 10

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Correct Answer - Option 3 : 9


Each exterior angle = 40°

Formula Used: 

Number of sides = 360°/Measurement of each exterior angle 


Number of sides = 360°/Measurement of each exterior angle

⇒ Number of sides = 360°/40° 

⇒ Number of sides = 9

∴ The regular polygon has 9 sides if each exterior angle is 40°.

The correct option is 3 i.e. 9

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