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प्रश्न
Find the number of sides in a regular polygon, when each interior angle is: 135°
उत्तर
Each interior angle of a regular polygon
= `(("n" - 2) xx 180°)/"n"`
⇒ `(("n" - 2) xx 180°)/"n"` = 135°
⇒ 180°(n - 2) = 135°(n)
⇒ 4(n - 2) = 3n
⇒ n = 8.
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