An equilateral triangle has a side length of 24 inches. What is its perimeter?
Since this triangle is an equilateral triangle, all sides are equal. You only have to multiply the side you are given by 3. Doing so you get:
Thus, 72 inches is your answer.
Note: This only works for equilateral triangles. With isosceles or scalene triangles, you must have the angular quantities to do the problem.
The perimeter is the sum of the sides of a given shape. We know a few things about our shape:
- We have a triangle, which has
- This is an equilateral triangle, meaning the lengths are equal
- One side is
If all of the sides are the same, we are essentially adding
Hope this helps!