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# order 4 - PowerPoint PPT Presentation

## order 4

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##### Presentation Transcript

1. order 4 Eg1. A square It fits on itself 4 times back We say that a square has…

2. order 1 Eg2. A heart shape It fits on itself only once back We say that a heart has…

3. Remember your MARGIN !!! DATE Objectives: To be able to recognise the order of rotational symmetry of any shape

4. Rotational Symmetry • The order of rotational symmetry of a shape is determined by how many times the shape fits onto itself during a 360° turn. (Example 1) • Every shape has an order of rotational symmetry, even if it is order 1. (Example 2) • Have a look at the following shapes…

5. order 2 What is the order of rotational symmetry? answer

6. order 6 What is the order of rotational symmetry? answer

7. order 2 What is the order of rotational symmetry? answer

8. order 3 What is the order of rotational symmetry? answer

9. 4 3 2 A 1 0 -4 -3 -2 -1 0 1 2 3 4 -1 -2 -3 -4