Given: δabc with prove: statement reason 1. given 2. addition property of equality 3. using common denominators 4. ab = ad db cb = ce eb segment addition 5. substitution property of equality 6. reflexive property of congruence 7. δabc ~ δdbe sas similarity criterion 8. ∠bac ≅ ∠bde corresponding angles of similar triangles are congruent. 9. if the corresponding angles formed by two lines cut by a transversal are congruent, then the lines are parallel. 5 what is the missing step in this proof? a. ∠abc ≅ ∠dbe b. ∠bca ≅ ∠bde c. ∠acb ≅ ∠deb d. ∠bde ≅ ∠ade e. ∠cab ≅ ∠dac