# Perimeter - Finding Side Lengths

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## Perimeter - Finding Side Lengths Answer Key

1.

If BC = 15 and ED = 6, which side length can be found?

- AB
- CD
- FE
- AF

2.

If AB = 6 and CD = 4, which side length can be calculated?

- BC
- ED
- FE
- AF

3.

Perimeter = 36

AB = 8

BC = 10

CD = 6

ED = 5

EF = 2

What is the length of side AF?

AB = 8

BC = 10

CD = 6

ED = 5

EF = 2

What is the length of side AF?

- 5
- 6
- 7
- 8

4.

Perimeter = 30

BC = 6

CD = 6

ED = 2

EF = 3

AF = 4

What is the length of AB?

BC = 6

CD = 6

ED = 2

EF = 3

AF = 4

What is the length of AB?

- 6
- 7
- 8
- 9

5.

The perimeter of regular hexagon ABCDEF is 18. What is the length of DE?

- 3
- 6
- 9
- 12

6.

The perimeter of regular heptagon ABCDEFG is 14. What is the length of side FG?

- 1
- 2
- 6
- 7

7.

Square ABCD has a perimeter of 20. Which of the following could be the length of side FG of rectangle EFGH?

- 4
- 5
- 15
- 20

8.

Given the following side lengths, how much larger is the perimeter of rectangle ABCD then the perimeter of rectangle EFGH?

AB = 7

BC = 5

EF = 3

FG = 2

AB = 7

BC = 5

EF = 3

FG = 2

- 10
- 14
- 17
- 24

9.

Each unit square has a side length of 1. Which figure has a perimeter of 18?

10.

Each unit square of the figure has a side length of 1. Which figure has the same perimeter as the figure shown?

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