This diagram of airport runway intersections shows two parallel runways. a taxiway crosses both runways. how are ∠8 and ∠4 related? question 10 options: same-side interior angles none of these

Angle 8 and angle 4 are corresponding angles. 

The parallel vertical lines can be thought of as train tracks. Angle 8 and angle 4 are both on the left side of their adjacent train track line. They are also on the bottom side of the transversal cut. This is why they are corresponding angles.

Since the only options are "same side interior angles" and "none of these", the answer is "none of these". 

A. -10 is the value of x