Question

What is the reason for statement 4 in this proof?

Transitive Property of Equality
definition of midpoint
definition of parallel lines
Reflexive Property of Equality

Answer 1

It's the reflexive property because it's just relating it to itself (def. of reflexive)

As we all know: A=A, B=B, mx=mx, nothing changes.

So the answer is D

Answer 2

Reflexive Property of Equality