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`