Answer:
Angle D=102 degrees
x= 180-102= 78 degrees (co-interior angles)
Angle A = Angle D (opposite angles in a parallelogram)
3y+6=102
=>3y=102-6
=>y=96/3
=>y=32
Angle C= Angle B (opposite angles in a parallelogram)
4z+2=78
=>4z=76
=>z= 19
Hope it helps..........