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प्रश्न
Find the number of sides in a regular polygon, if its interior angle is: 150°
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उत्तर
Let no.of.sides of regular polygon be n.
Each interior angle = 150°
`therefore (("2n" - 4) xx 90^circ)/"n" = 150^circ`
180n - 360° = 150n
180n - 150n = 360°
30n = 360°
n = 12
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