Question

Last one - Thank you an advance :)

Answer 1

a. Given
b. Substitution property
c. Vertical angles
d. Substitution

Answer 2

Answers:
a. Given
b. Transitive property of congruence
c. Vertical angles are congruent
d. Transitive property of congruence

Let me know if you need any clarification as to how I got those answers. They should be self-explanatory but I'm happy to clarify further if needed.