Question

Interior angle is120 degree what is its exterior angle

Answer 1

Step-by-step explanation:

exterior angle =360-120

=240 degree

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Answer 2

Answer:

60 deg

Step-by-step explanation:

Using formula for interior angle we get

(2n-4)*90

_________. = 120deg

n

180n - 360 = 120n

60n = 360

n = 360 / 60

n = 6

So it is a six sided figure

Now exterior angle is given by

360/n

= 360/6

= 60 deg