3

Set 4: Triangles (Intermediate)

Explanation

Answer: D

PROBLEM

Recent studies show that an equilateral triangle has a perimeter of 15. What is the length of each side?

An equilateral triangle has a perimeter of 15. What is the length of each side?

A.

6

B.

3

C.

2

D.

5

✓ Correct

Detailed Explanation

[Variation 1] Choice D is the best answer. Each side = 15 / 3 = 5

Why others are wrong:
A: 6 is incorrect because it does not satisfy the equation.
B: 3 is incorrect because it does not satisfy the equation.
C: 2 is incorrect because it does not satisfy the equation.