prove that a triangle is congruent to other triangle when their three sides are equal to each other

if three sides of a triangle are equal to the other than by sss congruency criterion the triangles will be congruent.

you all are mistaken!!!

His question is how SSS criteria derived! Listen gourav, it is a sort of an activity! first take two paper triangles of same dimensions say - 4 cm, 5 cm, 6 cm! Try to place one triangle over another! You will observe hat both the riangles will coincide with each other!

SO SSS IS PROVED!!!!!!!!      :) 

dude dis was rite. or simply when 3 sides r equal means it is a equalatral triangle 'n' so all angles r also equal . tat's simple!!!