Question

Look at the figures. How can you prove these triangles are congruent?

∆ABC ≅ ∆DEF by the SAS Postulate.

∆ABC ≅ ∆DEF by the SSS Postulate.

It is not possible to determine if the triangles are congruent.

Answer 1

It is not possible to determine if the triangles are congruent

by SSS, you need to know AC=DF, but there is no way to know it.

by SAS, you need to know ∠ABC=∠DEF, no way to know as well.