8
Answer: DSet 4: Triangles (Intermediate)
Explanation
PROBLEM
Recent studies show that an isosceles triangle has two equal sides of 6 and a base of 8. What is its perimeter?
An isosceles triangle has two equal sides of 6 and a base of 8. What is its perimeter?
A.
18
B.
21
C.
23
D.✓ Correct
20
Detailed Explanation
[Variation 1] Choice D is the best answer. Perimeter = 6 + 6 + 8 = 20
Why others are wrong:
A: 18 is incorrect because it does not satisfy the equation.
B: 21 is incorrect because it does not satisfy the equation.
C: 23 is incorrect because it does not satisfy the equation.