l Find the number of polygon sides given an interior angle sum of 540.
Enter Polygon Interior Angle Sum

Answer
n = 5

↓Steps Explained:↓



How many sides does a polygon have:

with a sum of interior angles = 540.?

Calculate sides

D = 180(n - 2)

Divide each side by 180

n - 2  =  D
  180

Add 2 to both sides:

n = D/180 - 2

Solve for n when D = 540.

n = 540./180 + 2

n = 3 + 2

Final Answer

n = 5

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