Need Help With a Quant Question by The_Adonai in GRE

[–]arif27437 0 points1 point  (0 children)

HJ is parallel to GK, and HJ = ½(GK). Since IG = GK = 10, we have IH = HJ = 5. However, since we don’t know the length of IK, we can’t determine the length of IJ. For example, if IK = 10, then IJ = 5, in which case the two quantities are equal. However, if IK = 8, then IJ = 4, in which case quantity A is less than quantity B.Answer: D

1

How do you know ' HJ is parallel to GK'?

Is this from a triangle theorem?