In δabc,. Complete the proof showing that is parallel to. Statement reason 1. Given 2. 3. Using common denominators 4. Segment addition 5. Substitution property of equality 6. ∠abc ≅ ∠dbe reflexive property of congruence 7. Sas criterion for similarity 8. ∠bac ≅ ∠bde corresponding angles of similar triangles are congruent. 9. If the corresponding angles formed by two lines intersected by a transversal are congruent, then the lines are parallel.