Respuesta :
Answer: 1. AD || BC, AD = CB (A. If Lines are Parallel, then Alternate Interior Angles are Equal.)
2. AC = AC (B. If Alternate Interior Angles are Congruent, then Lines are Parallel.)
3. 2 = 3 (C. CPCTE)
4. ACD = CAB (D. Reflexive Property of Equality)
5. 1 = 4 (E. SAS)
6. AB || DC (F. Given)
the answer is 25
if i'm wrong sorry
Step-by-step explanation: