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A regular polygon has an interior angle of 168 degrees. How many side does it have?
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A regular polygon has an interior angle of 168 degrees. How many side does it have?

User Bruce Dean
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Sum of the interior angles of a regular polygon=(n-2) x 180 degrees
Each interior angle=(180n-360)/n
168= (180n-360)/n
168n=180n-369
-12n=-360
12n=360
n=30
User Eylon Sultan
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