Answer:
Prove: A is congruent to B
Proof: Vertically opposite angles
Statement:
2./_a and /_b
3.a and b
4.ab congruent to ab
5.ab congruent to ab
6.a congruent to b
Reason:
2.Vertical angles
3.Def. of midpoint
4.Reflexive Property
5.SSS Congruence Postulate
6.CPCTC
