Question

Write down different criterions for congruency.

Answer 1

These are the criterions for congruency

SSS criterion: If the sides of a triangle are equal to the corresponding sides of another triangle, then the triangles are congruent

ASA criterion: If two angles and an including side of one triangle are equal to the corresponding two angles and an including side of another triangle, then the triangles are congruent

AAS criterion: If any two angles and a side of a triangle are equal to the corresponding two angles and side of another triangle,then the triangles are congruent

SAS criterion: If two sides and an including angle of a triangle are equal to the corresponding two sides and the including angle of another triangle,then the two triangles are congruent.

RHS criterion: If a hyptenuse and a side of a Right angled triangle are equal to the hypotenuse and side of another right angled triangle,then the two triangles are congruent.