Question

A.given
B. Definition of congruence
C.CPCTC
D.substitution property of congruence

Answer 1

CPCTC means congruent parts of congruent triangles are congruent.

1. Because ΔABC =ΔAED, their corresponding sides and angles are congruent.

2. So, ∠BAC =∠EAD.

So, reason for 2. ∠BAC =∠EAD is C.CPCTC.