Interior angles - sum

For the sum s of the interior angles of a polygon, where n is the number of its sides, the relation s=(n−2)⋅180 degrees applies. How many sides does a polygon have if the sum of its interior angles is 900°?

Correct answer:

n =  7

Step-by-step explanation:

900=(n2) 180  180n=1260  n=1801260=7  n=7



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