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Perimeter: How Big is the Polygon?

In this worksheet, students work out the perimeter of a regular 2D polygon.

'Perimeter: How Big is the Polygon?' worksheet

Key stage:  KS 2

Curriculum topic:  Maths and Numerical Reasoning

Curriculum subtopic:  2D Shapes: Triangles, Quadrilaterals and Polygons

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

In this worksheet, children must work out the perimeter of a regular 2D polygon.

Perimeter is the total distance around the outside of a 2D shape. You can calculate it by adding together the length of all the sides.

Remember that in a regular polygon, all the sides are the same length.

 

Example

Calculate the perimeter of the shape.


 3 cm 


Answer

First count the number of sides.

There are 5 sides in this shape (pentagon).

It is regular so each side is 3 cm long.

The perimeter is 5 x 3 = 15 cm

 

Remember the answer is 15 cm not just 15

Calculate the perimeter of the shape.


 10 cm 
 
 

 

Remember to write your answer in cm.

Calculate the perimeter of the shape.


 5 cm 
 

Remember to write your answer in cm.

Calculate the perimeter of the shape.


 6 cm 
 

Remember to write your answer in cm.

Calculate the perimeter of the shape.


 10 cm 
 
 

 Remember to write your answer in cm.

Calculate the perimeter of the shape.


 10 cm 
 
 

 Remember to write your answer in cm.

Calculate the perimeter of the shape.


 8 cm 
 
 

 Remember to write your answer in cm.

Calculate the perimeter of the shape.


 6 cm 
 

Remember to write your answer in cm.

Calculate the perimeter of the shape.


 5 cm 
 

Remember to write your answer in cm.

Calculate the perimeter of the shape.


 9 cm 
 
 

 Remember to write your answer in cm.

Calculate the perimeter of the shape.


 7 cm 
 
 

 Remember to write your answer in cm.

  • Question 1

Calculate the perimeter of the shape.


 10 cm 
 
 

 

Remember to write your answer in cm.
CORRECT ANSWER
70cm
70 cm
  • Question 2

Calculate the perimeter of the shape.


 5 cm 
 

Remember to write your answer in cm.

CORRECT ANSWER
25 cm
25cm
  • Question 3

Calculate the perimeter of the shape.


 6 cm 
 

Remember to write your answer in cm.

CORRECT ANSWER
48cm
48 cm
  • Question 4

Calculate the perimeter of the shape.


 10 cm 
 
 

 Remember to write your answer in cm.

CORRECT ANSWER
80 cm
80cm
  • Question 5

Calculate the perimeter of the shape.


 10 cm 
 
 

 Remember to write your answer in cm.

CORRECT ANSWER
100cm
100 cm
  • Question 6

Calculate the perimeter of the shape.


 8 cm 
 
 

 Remember to write your answer in cm.

CORRECT ANSWER
72 cm
72cm
  • Question 7

Calculate the perimeter of the shape.


 6 cm 
 

Remember to write your answer in cm.

CORRECT ANSWER
48 cm
48cm
  • Question 8

Calculate the perimeter of the shape.


 5 cm 
 

Remember to write your answer in cm.

CORRECT ANSWER
40cm
40 cm
  • Question 9

Calculate the perimeter of the shape.


 9 cm 
 
 

 Remember to write your answer in cm.

CORRECT ANSWER
81cm
81 cm
  • Question 10

Calculate the perimeter of the shape.


 7 cm 
 
 

 Remember to write your answer in cm.

CORRECT ANSWER
49cm
49 cm
---- OR ----

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