Question

The first Choose options is (are, are not)The second choose options (alternate interior, same side interior, corresponding, supplemental)The third choose options (do, do not)

Answer 1

The lines s and r are intersected by a transversal line t.

If the lines "s" and "r" are parallel, then the given angles should be corresponding angles, and therefore congruent:

As you can see, the angles are not equal, so lines "s" and "r" cannot be parallel lines.