please help
Which is enough information to prove that s is parallel to t?

Step-by-step explanation:
[tex]\angle 2 = \angle 4[/tex] [ since they are vertically opposite angle]
Again [tex]\angle 6= \angle 8[/tex] [ since they vertically opposite angle]
If two parallel lines are cut by transversal , then alternative interior angles are equal.
Then[tex]\angle 2 = \angle 4=\angle 6=\angle 8[/tex] ⇒ [tex]\angle 2 =\angle 8[/tex]