Set 1: Triangles (Intermediate)

**Choice A is the best answer.** Perimeter = 12 + 12 + 6 = 30

Explanation

Answer: A

PROBLEM

An isosceles triangle has two equal sides of 12 and a base of 6. What is its perimeter?

A.

30

✓ Correct

B.

28

C.

32

D.

33

Detailed Explanation

Choice A is the best answer. Perimeter = 12 + 12 + 6 = 30

Why others are wrong:

B: 28 is incorrect because it does not satisfy the equation.

C: 32 is incorrect because it does not satisfy the equation.

D: 33 is incorrect because it does not satisfy the equation.