The two column proof has shown that ΔDEF ≅ ΔYXF by SAS Congruency postulate
How to complete the two column proof?
The two column proof to show that ΔDEF ≅ ΔYXF is as follows:
Statement 1: EF ≅ XF
Reason 1: Given
Statement 2: DF ≅ YF
Reason 2: Given
Statement 3: ∠EFD ≅ ∠XFY
Reason 3: Opposite angles
Statement 4: ΔDEF ≅ ΔYXF
Reason 4: SAS Congruency postulate