Perimeter
Find the distance around a square or rectangle
What You'll Learn
- Add the side lengths
- Use perimeter = 2 × (width + height)
📖What is Perimeter?
Perimeter is the distance all the way around a shape. For a rectangle, add up all four sides — or use 2 × (width + height). A 5 by 3 rectangle has a perimeter of 2 × (5 + 3) = 16 units.