Use the figure to find the measures of the numbered angles.

Two parallel lines, a and b are intersected by a transverse line, t. Angle 1 and angle 2 are linear angles. Angle 1 and angle 3 are vertical angles. Angle 120 degrees and angle 2 are vertical angles. Angle 120 degrees and angle 6 are corresponding angles on the same side of the transversal. Angle 3 and angle 7 are corresponding angles on the other side of the transversal. Angle 6 and angle 5 are vertical angles. Angle 7 and angle 4 are vertical angles.