Set 3: Triangles (Intermediate)

**Choice C is the best answer.** Perimeter = 6 + 6 + 8 = 20

Explanation

Answer: C

PROBLEM

An isosceles triangle has two equal sides of 6 and a base of 8. What is its perimeter?

A.

17

B.

23

C.

20

✓ Correct

D.

21

Detailed Explanation

Choice C is the best answer. Perimeter = 6 + 6 + 8 = 20

Why others are wrong:

A: 17 is incorrect because it does not satisfy the equation.

B: 23 is incorrect because it does not satisfy the equation.

D: 21 is incorrect because it does not satisfy the equation.