Question

I'm stumped on this proof--
If two lines are cut by a transversal such that two corresponding angles are congruent, the lines are parallel.
How would you go about this?

Answer 1

In my text, this is what we took as a postulate for proving lines parallel.

Look in your book to see which of these proving lines statement your text took as a postulate and post it here. That is necessary to do this proof you want to do.

Answer 2

Did your text take one of these as a postulate? (see attachment)