In the triangles on the right, AB = DE, BC= EF , and ∠B =∠E .

Prove that △ABC ≅△DEF .

In the triangles on the right, AB = DE, BC= EF , and ∠B =∠E .

Prove that △ABC ≅△DEF .

\because AB = DE, BC= EF , and ∠B =∠E

which meets the condition of SAS

\therefore △ABC ≅△DEF