Answer: C) 1 and 8
Explanation:
Angle 1 and angle 8 are a pair of alternate exterior angles. Such angles are on opposite or alternating sides of the transversal cut, and they are exterior of the parallel lines. Alternate exterior angles are congruent when the lines are parallel like this.
The other answer choices can be ruled out because each pair mentioned are supplementary. Eg: angle5+angle6 = 180. Only when we're dealing with right angles will something like angle5 = angle6 happen; otherwise, the angles aren't the same.
