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Recognise and visualise transformations – reflection, rotation and translation.

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Presentation on theme: "Recognise and visualise transformations – reflection, rotation and translation."— Presentation transcript:

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3 Recognise and visualise transformations – reflection, rotation and translation.

4 For each of the shapes below find their lines of symmetry: W/S 10.1B

5 Did you find them all? The parallelogram has no lines of symmetry – make a parallelogram from paper and try folding if you are not convinced.

6 For each of the shapes below draw the reflection in the mirror line given: W/S 10.2B

7 Did you reflect the shapes correctly? In exams at KS3 and KS4 you can use tracing paper to help you with questions about reflection.

8 C Using the centre C can you rotate this triangle 90º clockwise? C Using centre C can you rotate this rectangle 180º clockwise? Using centre C can you rotate this arrowhead 90º anti-clockwise? C Using centre C can you rotate this rhombus 90º clockwise? W/S 10.3B

9 C C C Did you rotate the shapes correctly? You can use tracing paper in KS3 and KS4 exams to help you rotate shapes.

10 Here is a shape it has been rotated. Can you find the centre and the angle of rotation? Here is a shape that has been rotated can you find the centre and the angle of rotation? W/S 10.4B

11 The centre of the rotation stays the same so the centre is the corner that has not moved. C C The shape has been rotated through 90º clockwise This shape has been rotated 180º (clockwise or anticlockwise).

12 A B C D E The triangle labelled A has been translated into positions B, C, D and E. Can You describe each of these transformations using a vector? Example: A B is a translation 3232 3 squares along and 2 squares up

13 A B C D E Here are the correct answers: A A A A B C D ETranslation 3232 - 2 1 - 3 - 2

14 Task: Draw a 1 by 2 right-angled triangle in different positions and orientations on 5 by 5 spotty paper. Choose one of the triangles to be the original. Describe fully the transformations from your original to each of the other triangles drawn. You need W/S 10.5B

15 Recognise and visualise transformations – reflection, rotation and translation.

16 Thank you for your attention


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