SSS congruence

SSS congruence Given triangle ABC with three sides a,b,and c Construct triangle DEF such that DE=AB ,DF=AC,EF=BC use sliders to resize DE and EF and drag point F to resize DF when corresponding sides of both the triangles are equal then drag point D and make it lie over triangle ABC. You can move vertices A,B and C to form different triangles
Do the triangles overlap each other completely. If yes then By SSS(side-side-side) congruence the two triangles are congruent .