McGraw-Hill Education GRE 2019

Step 3: Calculate the lengths of each side of the resulting triangle:

(1,3)

4

3 (4,3)

(4,7)

y

x

The length of the horizontal leg will be the difference between the

x-coordinates of the given points: 4 – 1 = 3. The length of the vertical leg will

be the difference between the y-coordinates of the two points: 7 – 3 = 4. Now

that you have two legs of a right triangle, you can determine the distance

between the two points by calculating the hypotenuse:

32 + 4^2 = c^2

9 + 16 = c^2

25 = c^2

c = 5

The distance between the two points is 5.

438 PART 4 ■ MATH REVIEW

04-GRE-Test-2018_313-462.indd 438 12/05/17 12:06 pm