Respuesta :

if angle R = 60 and angle S = 80 then angle T = 180 - 80 - 60 = 40 

D ~ T 
F ~ R 
if 2 angles are congruent the 3rd must be 
E ~ S 

if RS = EF then those would be correct corresponding sides to go with those corresponding angles 
and it is congruent by AAS.
Resource: google and yahoo (rightful owners)

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