1. Perimeter

2. Warm Up How many sides do each of these shapes have?
Do squares and rectangles have equal sides?

3. Today we will find the perimeter of polygons by using measures of length.
Perimeter: The distance around a figure
10 cm
6 cm
6 cm
10 cm
= ______________
32 cm

4. Let’s find the perimeter
The distance around a figure
7 cm
5 cm
5 cm
Perimeter = 24 cm
7 cm
4 cm
Perimeter = 12 cm
2 cm
2 cm
4 cm
4 cm
4 cm
4 cm
Perimeter = 16 cm
4 cm

5. What is the perimeter of the shapes below?
5 cm
2 cm
2 cm
4 m
5 cm
4 m
= _______
14 cm
4 m
= ___
16 m

6. What is the perimeter of the shapes below?
5 cm
5 m
5 m
4 cm
4 cm
5 m
5 cm
= _______
18 cm
5 m
= _____
20 m

7. What is the perimeter of this figure?

8. Do these figures have
the same perimeter?

9. = _____

10. 4 cm
8 cm
11 cm
6 cm
3 cm
_________ units

12. Find the missing side for each figure
Find the missing side for each figure. Then determine whether the perimeter is correct.