Question

the measure of three angles of a quadrilateral are 60 degree, 70 degree and 80 degree. find the fourth angle.​

Answer 1

We know the sum of all interior angles of a quadrilateral = 360°

Given three angles = 60°, 70° and 80°

so fourth angle = 360°-(60+70+80)

= 150°

So fourth angle = 150°

please mark me the branliest

Answer 2

Answer:

theadditive inverse of (-2)