○=> Correct option :
[tex]\tt\color{plum}\bold{(A) \: 60}[/tex]
○=> Steps to derive correct option :
Given :
Measure of angle 7 = 60°
Angle 1 and angle 7 are corresponding angles, so their values will be equal.
Which means :
Angle 1 = 60°
Thus, the measure of angle 1 = 60°
Therefore, the correct option is (A) 60
