CALCULATOR

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## Perimeter of Polygons Calculator

### Step 1. Determine whether the polygon is regular.

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INTRO

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Perimeter is the total distance around the border of a 2D shape. To find the perimeter of a polygon, we need to find the length of each of its sides, then add them all together.To help us visualize this process, let's imagine we want to brighten up a room by lining it with some string lights.The perimeter is like the total length of string lights we need to line the walls.So the perimeter of this room is also equal to $2+2+2+2=8$. Perimeters are lit ✨.Check out our or explore our and sections to learn more about finding the perimeter of different shapes and test your understanding.

If each of our walls has length $2$, then we need a total string light length of $2+2+2+2=8$ to line the room.

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KEY STEPS

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## How to Find the Perimeter of Polygons

### Step 1. Determine whether the polygon is regular.

### Step 2. Count the number of sides.

### Step 3. Determine the lengths of each side of the polygon.

If the shape is not regular, make sure you find the length of every side you counted in Step 2.

### Step 4. Add up the side lengths.

$perimeter=side length×number of sides$

If the shape is not regular, add up all the side lengths you found in Step 3.$perimeter=side length 1+side length 2+...$

LESSON

— Perimeter of Polygons

PRACTICE

— Perimeter of Polygons

CONCLUSION

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