Question

PLZ HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

External angle= 110º

Explanation:

Sum of all angle of triangle = 180º

First you need to find t

t= 50 (see image below)

External angle ( the angle outside next to (t+20))

External angle + (t+20)= 180

External angle + 50+ 20= 180

External angle + 70 = 180

External angle= 110º