Measurement of angle 2 = 34 degrees
Here angle 2 and 4 are vertically opposite angles
Vertically opposite angles are always equal.
In the given figure 1 and 3 are vertically opposite angle . Also 2 and 4 are vertically opposite angles. So they are same
angle 2 = angle 4
∠2 = ∠4
34=∠4
Angle 4 = 34 degrees