Answer:
Step-by-step explanation:
Disclaimer: Some of my reasons may be a bit different than what you use.
stmt rsn
1. BC = AD, AD = 17, DC = 14, 1. given
m<1 = m<2
2. AC = CA . 2. reflexive prop.
3. ΔABC ≅ ΔCDA 3. SAS
4. AB = DC 4. CPCTC
5. AB = 14, BC = 17 5. substitution, 1, 4
