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प्रश्न
Find the number of sides in a regular polygon, if its exterior angle is : `1/3` of right angle
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उत्तर
Each exterior angle = `1/3` of a right angle
`= 1/3 xx 90`
= 30°
Let number of sides = n
`therefore 360^circ/"n" = 30^circ`
`therefore "n" = 360^circ/30^circ`
n = 12
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