Question

What is supplementary angle of 180 if it has 4 side

Answer 1

its 45 because all 4 sides has to sum up to 180*

(45 + 45 + 45 + 45) = 180

Answer: 45

Answer 2

so what I will do is

180/4 = 45

because when you do 45*4 = 180 degrees

I hope that's help !