Answer:
Angle XYV= 120 degrees
Explanation:
Remember that interior angles in a quadrilateral= 360 degrees and angles on a straight line= 180 degrees
angleWXY + angleYXV =180 degrees (angles on a straight line)
hence, 3x + x= 4x, 4x=180
x=45
angleYXZ + angleXYV + angleYVZ + angleVZX = 360 degrees(angle sum of quadrilateral)
hence, x+ angleXYV + 3x + 60 = 360
4x + angleXYV = 360
sub x= 45
angleXYV = 360-4(45)
=120