Question

Need help using sas, sss, asa, aas

Answer 1

$\bar{AB}\cong\bar{CD}$$AB+BC\cong BC+CD$$AC\cong BD$

If

$AE\parallel BF$

Then

$m\angle A\cong m\angle B$

If

$CE\parallel DF$

Then

$m\angle C\cong m\angle D$

So, by ASA congruency rule

$\text{AEC}\cong BFD$