Answer:
Step-by-step explanation:
I feature of congruence of triangles: side-side-side
Available two triangles must match equal sides, these triangles are congruent.
II feature of congruence of triangles side - angle - side
Available two sides and the angle contained between them in one triangle are equal to two sides and the angle contained between them in the other triangle, these triangles are congruent.
III feature of congruence of triangles angle - side - angle
If the side and two adjacent angles in one triangle, they are equal to the side and two adjacent angles of the other triangle, these triangles are congruent.
