Question

Congruence of triangles

Answer 1

the triangle can be congruence if any three side and angle are equal there are 5 ways by
SSS(side side side)
SAS(side angle side)
ASA(angle side angle)
AAS(angle angle side)
RHS(right hipotenies side)

Answer 2

there are 5 types of congruencies :
SAS : side angle side congruency 
AAS :angle angle side congruency 
ASA : angle side angle congruency 
RHS : right angle hypotenuse side congruency 
SSS : side side side congruency

i hope it helps.........