Question

Two angles of polygon are right angle and each side has 120°.Find the number of sides show solutions

Answer 1

Answer:

your question is wrong

Answer 2

Step-by-step explanation:

Let n be the number of sides.

∴ Sum of angles = 2*90° + (n - 2)*120°

⇒ Sum = 180° + 120n - 240

We know sum of all angles of a polygon is - 180°(n-2)

∴ 180n - 360° = 180° + 120n - 240

⇒ 180n - 120n = 180 - 240 + 360

⇒ 60n = -60 + 360

⇒ 60n = 300

⇒ n = 300/60

n = 5