Question

Geometry Question:
Prove the symmetric Property for congruence of triangles.
Given: ∆ABC≅ ∆DEF
Prove: ∆DEF≅ ∆ABC

Answer 1

If you have ∆ABC≅ ∆DEF then you should be able to say corresponding parts of congruent triangles are congruent and this allows you to say AB ≅ DE, BC ≅ EF, CA ≅ FD. With this information you should be able to say by SSS that ∆DEF≅ ∆ABC.