# ASA (Angle-Side-Angle) Postulate

If two angles and the included side of a triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.

In the figure, $\angle B\cong \angle E,\stackrel{¯}{BC}\cong \stackrel{¯}{EF}$ and $\angle C\cong \angle F$ .

Therefore, by the ASA postulate, $\Delta ABC\cong \Delta DEF$ .