1. The best statement for reason 6 of this proof is a) ∠A ≅ ∠C
b) ∠B ≅ ∠D
c) ∠B and ∠D are supplements.
d) ∠B ≅ ∠B

2.The best reason for statements 3,5, and 7 in this proof is
a) Alternate interior angles are congruent.
b) Corresponding angles are congruent
c) Alternate exterior angles are congruent.
d) Interior angles on the same side of a transversal are supplements.

3. The best statement for reason 8 of this proof is
a) ∠B ≅ ∠B
b) ∠A and ∠C are supplements.
c) ∠B≅ ∠D d) ∠A ≅ ∠C