Pretty easy math question just need to make sure it’s right

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !