Ab←→ and cd←→ are parallel. if ef = a units, what is the measure of gh?

Using the information given in the question, no answer is possible.
You haven't given us enough information to know whether EF or GH
is even on the same planet as AB and CD. 

Where the white dots are is where your points should be plotted.a translation is simply just moving something from one place to another. in this case, you would move each plot point of the original shape 2 units up, and 5 units to the left.