Calculating Perimeter of Polygons
Name: _______________________________
Date: _______________________________
Remember: Perimeter is the total distance around a shape. Add all the side lengths together.
Part A: Regular Polygons
All sides are equal length in regular polygons.
1.
Regular pentagon with side length 7 cm
Perimeter = ________________
2.
Regular hexagon with side length 9 m
Perimeter = ________________
3.
Regular octagon with side length 5.5 cm
Perimeter = ________________
4.
Square with side length 12 mm
Perimeter = ________________
Part B: Irregular Polygons
Add all the side lengths together.
5.
Triangle with sides: 8 cm, 11 cm, 13 cm
Perimeter = ________________
6.
Quadrilateral with sides: 6 m, 9 m, 7 m, 10 m
Perimeter = ________________
7.
Pentagon with sides: 5 cm, 7 cm, 6 cm, 8 cm, 9 cm
Perimeter = ________________
8.
Hexagon with sides: 4.5 m, 3.2 m, 5.1 m, 4.8 m, 3.7 m, 4.2 m
Perimeter = ________________
Part C: Word Problems
9.
A rectangular garden is 15 metres long and 8 metres wide. What is the perimeter of the garden?
Perimeter = ________________
10.
A triangular sign has sides measuring 45 cm, 52 cm, and 38 cm. How much trim is needed to go around the edge of the sign?
Trim needed = ________________
11.
An irregular pentagon-shaped field has sides of 120 m, 95 m, 110 m, 105 m, and 130 m. A farmer wants to build a fence around it. What length of fencing is required?
Fencing required = ________________
Part D: Challenge
12.
A regular polygon has a perimeter of 56 cm. Each side is 7 cm long. How many sides does this polygon have?
Number of sides = ________________