9.
F. Symmetric Property of =.
The Symmetric Property of Equality states that if A = B, then B will = A, and that placement does not matter.
10.
B. Transitive Property of =.
The Transitive Property of Equality states that if A = B and B = C, then A = C.
In this case, AE = FB, FB = EF (meaning that point B is the midpoint), therefore, AE = EF.
