Answer:
d║e, c║f
Explanation:
The acute angle of intersection of e with t is ...
180° - 112° = 68°
This angle is the same as the acute angle at d, so d and e are parallel.
The acute angle of intersection of c with t is ...
180° -114° = 66°
This angle is the same as the acute angle at f, so c and f are parallel.
d║e, c║f
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Note that the acute angles at the intersections with t are all "corresponding". That is why their congruence means the associated lines are parallel.