4. In AABC below, ZASZC.BAсWhich sentence validates the statement AB = CB?

From the figure in the question;
[tex]\angle A\text{ }\cong\angle C[/tex]Since these angles are equal
then
If two angles of a triangle are congruent then the sides opposite the angles are congruent
Hence
[tex]\vec{AB}\text{ = }\bar{\text{CB}}[/tex]Thus,
If two angles of a triangle are congruent then the sides opposite the angles are congruent is sufficient to prove that AB = CB