QUANTITY A QUANTITY B
- A B C D
C
B
A
x° y°
x + 30°
QUANTITY A QUANTITY B
- x y A B C D
B
CD
E
A
45°
BCDE is a square
QUANTITY A QUANTITY B
- 12 × the area of BCDE The area of triangle ABE A B C D
B C
D
A
45°
Triangle ACD is equilateral
QUANTITY A QUANTITY B
- A B C D
The area of an
equilateral triangle
with an altitude of 8
The area of an
equilateral triangle with
a side length of 8
The perimeter of
triangle ABC
The perimeter of
triangle ACD
CHAPTER 13 ■ GEOMETRY 391
04-GRE-Test-2018_313-462.indd 391 12/05/17 12:04 pm