What is a congruency statement

A congruency statement is a two geometrical figure that congruent if all the lengths in one figure are equal to the corresponding lengths in the other figure

If two angle in one triangle are congruent to two angles of a second triangle, and also if the included sides are congruent, then the triangles are congruent. Using labels: If in triangles ABC and DEF, angle A = angle D, angle B = angle E, and AB = DE, then triangle ABC is congruent to triangle DEF.