Question

Find the value of y: 120° 509 (a) 50° (b) 70° (c) 40° (d) None of these​

Answer 1

we know that exterior Angle = sum if other 2 angles .

so, y+50°=120°

=> y = 120°-50°

=> y = 70°

option b) is correct.

please mark me as brainliest