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Discover how to find the perimeter of shapes easily by adding up all measurements around the outside. Practice calculating perimeters for different shapes and explore which shapes have the same perimeter. No need to measure every side individually!
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To find the perimeter we need to add all the measurements from around the outside. 8cm 8cm 8cm 8cm 8cm + 8cm + 8cm + 8cm = 32cm
4cm 4cm Do we have to measure every side to work out the perimeter? 5cm 2cm 2cm 5cm 4cm
Write down the perimeter for each shape. Which shapes have the same perimeter? c a b e d
Write down the perimeter for each shape. Which shapes have the same perimeter? c a b Perimeter = 12cm Perimeter = 8cm e Perimeter = 12cm Perimeter = 22cm d Perimeter = 14cm