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The sum of a regular polygon's interior angles is always 180(n-2) where n is the number of sides. Therefore, for a regular polygon to have interior angles of 150 degrees, we use the following equation:

[180(n-2)]/n=150

(180n-360)/n=150

180n-360=150n

30n=360

n=12

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Q: How many sides are in a regular polygon if the measure of each interior angle 150?
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