Question

two triangles are necessarily congruent if and only if when

Answer 1

their sides are equal and their angles are equal

Answer 2

1.two sides and interior angle of one triangle is equal to the corresponding sides and angle of other.
2.all sides of one triangle are equal to the corresponding sides of other.
3.two angles and interior side of one triangle are equal to the corresponding angles and side of other.
4.if both the triangles are right angled then if hypotenuse and any one side of one triangle are equal to the corresponding sides of other, the triangles called congruent.