McGraw-Hill Education GRE 2019

x° y°

z° q°

a° c°

d° b° l 1

l 1 || l 2

l 2

QUANTITY A QUANTITY B

4. a z A B C D

c°

d°

a°

b°

l 1

l 2

l1 and l2 intersect to the left of the diagram

QUANTITY A QUANTITY B

5. a + b 180 A B C D

Exercise Answers

Discrete Quantitative Questions

1. A Since y and x form the angles on a line, they must be supplementary.
   Thus y + x = 180. Substitute 3x for y:
   3 x + x = 180
   4 x = 180
   x = 45


2. C Angles a, b, and x lie on a line, so a + b + x = 180. Substitute 100 for (a + b):
   100 + x = 180
   x = 80

CHAPTER 13 ■ GEOMETRY 373

04-GRE-Test-2018_313-462.indd 373 12/05/17 12:04 pm