2 years ago

Find the number of sides of a regular polygon if one interior angle is 120 degrees.

Mathematics

2 answers:

bearhunter [10]2 years ago

7 0

6 sides hope this helps!!!

mojhsa [17]2 years ago

4 0

Answer:

B. 6 sides

Step-by-step explanation:

Interior angles of a n side Regular Polygon = (180n – 360) / n

120 = (180n – 360) / n

120n =180n - 360

180n - 120n = 360

60n = 360

n = 6

check: sum of interior angles of 6 side polygon: 180 * (6-2) = 720

720/6 = 120

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