Answer:
<EFC and <DCF
Step-by-step explanation:
Alternate interior angles: Angles that are inside the parallel lines and are opposite from each other
<DCA and <DCF are supplementary angles meaning they add up to 180 degrees.
<EFH and <GFC are vertical angles and both angles are not inside the parallel lines.
<BCF and <GFH are not alternate interior angles because both the angles aren't inside the parallel lines.
<EFC and <DCF are alternate interior angles because they are on opposite sides of the transversal and inside the parallel lines.
Are you going to put the problems so people can help you
5 over the power if two divide 6 from what you get and that is your answer