Homework 13-2
Name
Perimeter of
Common Shapes
Another Look!
Use the attributes of these common shapes to find the
missing side lengths. Then find the perimeters.
Rectangle
Square
Equilateral Triangle
Two pairs of sides
have the same
length.
All 4 sides have the
same length.
All 3 sides have the
same length.
You can use the
attributes of
polygons to help
find perimeters.
6 cm
5 in.
5 ft
4 in.
5 + 5 + 5 = 15 ft
4 + 5 + 4 + 5 = 18 in.
6 + 6 + 6 + 6 = 24 cm
In 1 through 9, find the perimeter of each polygon.
1. Square
2. Rectangle
4 cm
3. Triangle
5m
3 in.
2m
4. Parallelogram
5. Rectangle
8 ft
6 ft
4 ft
5 ft
7. Triangle
6. Triangle
8. Square
2 in.
9. Rectangle
2 in.
1 ft
2 cm
Digital Resources at PearsonTexas.com
4 in.
Topic 13 Lesson 13-2
711
DATA
10. Analyze Information Niko makes
beaded necklaces in three different
sizes. How many more beads does it
take to make 2 large necklaces than
2 medium necklaces? Explain how you
found your answer.
Size of
Necklace
Number of
Beads
Small
68
Medium
129
Large
212
11. Number Sense Paolo earns $4 for each
hour he tutors. He tutored for 2 hours last
week and 5 hours this week. How much
did Paolo earn?
12. What is the perimeter of a hexagon that
has equal sides of 12 centimeters?
13. Reason The perimeter of the figure
below is 14 feet. What is the missing
length? Show how you found the answer.
14. Construct Arguments Debra says two
squares of different sizes can have the
same perimeter. Is Debra correct? Why
or why not?
2 ft
1 ft
?
A 36 centimeters
C 60 centimeters
B 48 centimeters
D 72 centimeters
3 ft
1 ft
5 ft
15. Justify Nina draws a square and Nick
draws a pentagon. If all sides of both
shapes are each 9 inches long, are their
perimeters the same? Explain.
16. Extend Your Thinking Pete put these two
trapezoids together to make a hexagon.
What was the perimeter of the hexagon
Pete made? Explain how you know.
3 in.
3 in.
3 in.
5 in.
712
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3 in.
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