10

Set 1: Triangles (Intermediate)

Explanation

Answer: A

PROBLEM

An isosceles triangle has two equal sides of 12 and a base of 7. What is its perimeter?

An isosceles triangle has two equal sides of 12 and a base of 7. What is its perimeter?

A.

31

✓ Correct
B.

34

C.

28

D.

32

Detailed Explanation

Choice A is the best answer. Perimeter = 12 + 12 + 7 = 31

Why others are wrong:
B: 34 is incorrect because it does not satisfy the equation.
C: 28 is incorrect because it does not satisfy the equation.
D: 32 is incorrect because it does not satisfy the equation.

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