Answer:
Step-by-step explanation:
you know some things about the two angles they are the complimentary parts of just one of those perpendicular lines. so you can say
180 = (6x + 5) + (3x+13)
180 = 9x +18
162 = 9x
18 = x
Solution given;
6x+5+3x+13=180(sum of exterior angle is 180°)
9x=180-18
x=162/9
x=18 is a required answer.
