Angle 1 and angle 8 are alternate exterior angles (B)
Step-by-step explanation:Using an illustration:
Same colours represent alternate angles. Alternate angles are equal.
While opposite colour on same line represent corresponding angles.
Angle 1 is equal to the colour pink on the same line (at the top). This is because they are corresponding angles. Same with angle 8 and the colour green at the bottom.
Hence, Angle 1 is equal to angle 8 since green colour is equal to pink colour. They are alternate to each other and they are exterior angles.
Angle 1 and angle 8 are alternate exterior angles (B)