lmaura429 Wrote:This problem confuses me because isn't the diagram 2 parallel lines cut by a transversal, and therefore, shouldn't X = Y?
no. wrong parallel lines.
for x and y to be the same, the two
diagonal lines would have to be parallel. but what you're given is that the two
horizontal lines are parallel.
if this is not crystal clear, take a red pen or highlighter and trace out the lines that form angles x and y. then take a look at which pair of (supposedly) parallel lines you've highlighted.
(1) X > Y. The SR angle with y (given) is equal to angle PSR because the alternate interior angles are equal. Therefore, if X > Y, SR is opposite of X and PQ is opposite of Y, so SR > PQ. Sufficient.
don't know exactly what you mean by "opposite" here.
if you are trying to use the "longer length is found across from larger angle" rule, then, no (although you get really, profoundly, don't-bother-playing-the-lottery-anymore
lucky in this one particular problem). that rule only applies to
triangles, not to any random shape containing angles and lines.
(if the angles in this figure were
greater than 90º, then the inequalities would work out in exactly the opposite way.)
if you meant something else, go ahead and explain. thanks.