An equilateral triangle is shown with one side labeled 6 in.
Part A
What is the perimeter of this equilateral triangle?
A.12 in.
B.18 in.
C.24 in.
D.36 in.
Part B
The equation used to solve this problem is:
Choose...
×Choose...
=Choose...
Part A: The perimeter of an equilateral triangle is simply the sum of the lengths of all three sides. Since all sides of an equilateral triangle are equal, we can find the perimeter by multiplying the length of one side by 3. Therefore, the perimeter of this equilateral triangle would be 6 + 6 + 6 = 18 in. The answer is B.
Part B: The equation used to solve for the perimeter of an equilateral triangle is:
Perimeter = 3 x Length of one side