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Published byCarmel Melton Modified over 4 years ago

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Perimeter Basics Solving Hard Perimeters Perimeter Perimeter St. Andrew’s Secondary

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Starter Questions St. Andrew’s Secondary

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Learning Intention Success Criteria 1.To know the term perimeter of a shape. 1. To understand the term perimeter of a shape. 2. Calculate the perimeter of a shape. Perimeter

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Perimeter St. Andrew’s Secondary What is perimeter ? Hint answer is on the screen !

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Perimeter Perimeter St. Andrew’s Secondary

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Perimeter Perimeter St. Andrew’s Secondary

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Circumference Perimeter Perimeter St. Andrew’s Secondary

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Perimeter is the distance round the outside of a 2D shape Perimeter St. Andrew’s Secondary

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6cm Calculate the perimeter of the rectangle below. 3cm Perimeter = 6 +3 +6 +3 = 18cm Perimeter St. Andrew’s Secondary

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4cm 3cm 5cm Perimeter = 3 + 5 +4 =12cm Perimeter St. Andrew’s Secondary

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Calculate the perimeter of the rectangle. 10cm 4cm Perimeter =28cm Perimeter St. Andrew’s Secondary

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Calculate the perimeter of the triangle below. 13cm 5cm 12cm Perimeter = 30cm Perimeter St. Andrew’s Secondary

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Now try Exercise 3 MIA Ch12 (page 130) St. Andrew’s Secondary Perimeter

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Starter Questions St. Andrew’s Secondary

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Learning Intention Success Criteria 1.Work out missing lengths. 1. To work out the perimeter of a shape by first working out missing lengths. 2. Calculate the perimeter of a shape. Perimeter

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Below is a draw of the school building. Calculate the perimeter. Perimeter St. Andrew’s Secondary Problem 4 m 9 m 8 m x m 12 m 4 m x = 12 – 9 =3 m Perimeter = 12 + 8 + 3 + 4 + 9 + 4 = 40 m

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Below is a drawing of a kitchen plan. Calculate the perimeter. Perimeter St. Andrew’s Secondary Problem 4 cm 2 m 6 m y cm 2 m 4 m y = 6 – 4 = 2 m Perimeter = 6 + 4 + 2 + 2 + 4 + 2 = 20 m

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Now try Exercise 4 MIA Ch12 (page 132) St. Andrew’s Secondary Perimeter

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