Quantitative Comparisons & Data Interpretation GRE Strategy Guide by Manhattan Prep

Author:Manhattan Prep
Language: eng
Format: epub
Publisher: MG Prep, Inc.

To start, the easiest thing to do is align the points so that they form a rectangle. Now, PR = QT. This diagram reflects all the information provided.

Now, take another look at the quantities:

Quantity A Quantity B

PQ RT

According to the diagram, PQ = RT.

You're not done. You need to try to prove (D).

Now, the final step: establish what you don't know. Remember that the diagram above is only one possible way to represent the common information. Ask yourself, “What can change in this diagram?”

In the diagram above, PQ and RT were drawn perpendicular to the two parallel lines. But the angle can change. Redraw the diagram with PR and QT slanted:

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