if angle 1 in the picture is 63°, what is the measure of angle 3? Why? (1 point)
Angle 3 is 117° because angle 1 and angle 3 form a line.
There is not enough information in the figure to establish this.
Angle 3 is 63° because angle 1 and angle 3 are vertical angles.
Angle 3 is 63° because angle 1 and angle 3 are corresponding angles.