Question

Which two triangles are congruent?

ΔIGH ≅ ΔFED

ΔFDE ≅ ΔCAB

ΔACB ≅ ΔJKL

ΔJKL ≅ ΔHIG

Answer 1

SSS, ASA, AAS and SAS are all sufficient conditions for you to conclude that a pair of triangles are congruent.

Answer 2

i know, but all that is so confusing to me /:

Answer 3

SSS = their respective side lengths are equal
SAS = a pair of sides are congruent, as well as the angle BETWEEN them
ASA = a pair of angles are congruent, as well as the side BETWEEN them
AAS = a pair of angles are congruent, as well as a side. (this follows from ASA)