Set 2: Triangles (Intermediate)

**Choice A is the best answer.** Perimeter = 11 + 11 + 5 = 27

Explanation

Answer: A

PROBLEM

An isosceles triangle has two equal sides of 11 and a base of 5. What is its perimeter?

A.

27

✓ Correct

B.

29

C.

26

D.

28

Detailed Explanation

Choice A is the best answer. Perimeter = 11 + 11 + 5 = 27

Why others are wrong:

B: 29 is incorrect because it does not satisfy the equation.

C: 26 is incorrect because it does not satisfy the equation.

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