Line BA
AB and BA.
Yes.
According to the symmetric property (and common sense) line segmetn AB is congruet to line segment BA since they are the same segment, just with a different name
Yes, It doesn't madder what direction you name them unless you were given specific instructions.
NB, Nb
The GCF is ab
[(aa + bb) + (ab+ba)(aa+bb)*(ab+ba)]*[a + (ab+ba)(aa+bb)*b]
Yes.
Line BA
Yes, provided it is the ray. If AB is a vector then the answer is no.
I think its BA.
AB and BA.
yes it is
Yes.
yes
no; commutative