Respuesta :

Nayefx

Answer:

SAS congruency

Step-by-step explanation:

we are given

  • EF=DF
  • FA=FD
  • [tex]\angle EFA=\angle DFB[/tex]

hence,

[tex] \displaystyle \rm \Delta EFA \cong\Delta DFB \text{ by \: SAS}[/tex]

reference:

  • the Proof is resource of our textbook
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