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Whiteboardmaths.com © 2004 All rights reserved 5 7 2 1.

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Presentation on theme: "Whiteboardmaths.com © 2004 All rights reserved 5 7 2 1."— Presentation transcript:

1

2 Whiteboardmaths.com © 2004 All rights reserved

3 1 LoS One Line of Symmetry Vertical lines of symmetry Horizontal lines of symmetry Diagonal lines of symmetry

4 2 LoS 2 Lines of Symmetry

5 Rectangle The Rectangle Problem A rectangle has only 2 lines of symmetry and not 4 like the square To see this consider the following: Half a rectangle Mirror Line

6 The Rectangle Problem A rectangle has only 2 lines of symmetry and not 4 like the square To see this consider the following: Half a rectangle Mirror Line A reflection in the diagonal would produce a kite!

7 3 LoS 3 Lines of Symmetry

8 4 LoS 4 Lines of Symmetry

9 5 LoS 5 Lines of Symmetry

10 6 LoS 6 Lines of Symmetry

11 Regular Regular Polygons Equilateral Triangle Square Regular Pentagon Regular Hexagon Regular Octagon Regular polygons have lines of symmetry equal to the number of sides/angles that they possess.

12 Mix 1 How many lines of symmetry for each shape?

13 Mix How many lines of symmetry for each shape?

14 Mix How many lines of symmetry for each shape?

15 Mix 4 How many lines of symmetry for each shape?

16 Mix 5 How many lines of symmetry for each shape?

17 Mix 6 How many lines of symmetry for each shape?

18 And a big thankyou to all our friends!

19

20 Tracing 1 Reflections object Mirror Line Reflect the object shape in the mirror line shown. Trace the shape and mirror line using tracing paper. Turn tracing paper over and match up mirror lines.

21 object Mirror Line Reflect the shape in the mirror line shown. Reflections Trace the shape and mirror line using tracing paper. Turn tracing paper over and match up mirror lines. Mark position of vertices, remove tracing paper and draw image of shape.

22 Mirror Line Reflect the shape in the mirror line shown. Reflections Trace the shape and mirror line using tracing paper. Turn tracing paper over and match up mirror lines. Mark position of vertices, remove tracing paper and draw image of shape. object image

23 Tracing 2 Reflections Mirror Line Reflect the object shape in the mirror line shown. Trace the shape and mirror line using tracing paper. object Turn tracing paper over and match up mirror lines.

24 Reflections Mirror Line Reflect the object shape in the mirror line shown. Trace the shape and mirror line using tracing paper. object Turn tracing paper over and match up mirror lines. Mark position of vertices, remove tracing paper and draw image of shape.

25 Reflections Mirror Line Reflect the object shape in the mirror line shown. Trace the shape and mirror line using tracing paper. object Turn tracing paper over and match up mirror lines. Mark position of vertices, remove tracing paper and draw image of shape. image

26 Tracing 3 Reflections Reflect the object shape in the mirror line shown. Trace the shape and mirror line using tracing paper. Turn tracing paper over and match up mirror lines/square corners. Mirror Line object

27 Reflections Reflect the object shape in the mirror line shown. Trace the shape and mirror line using tracing paper. Turn tracing paper over and match up mirror lines/square corners. Mirror Line object Mark position of vertices, remove tracing paper and draw image of shape.

28 Reflections Reflect the object shape in the mirror line shown. Trace the shape and mirror line using tracing paper. Turn tracing paper over and match up mirror lines/square corners. Mirror Line object image Mark position of vertices, remove tracing paper and draw image of shape.

29 WS 1

30 WS 2

31 Ws 3

32 WS 4

33 WS 5

34 WS 6

35 Mix 1a How many lines of symmetry for each shape?

36 Mix 2a How many lines of symmetry for each shape?

37 Mix 3a How many lines of symmetry for each shape?

38 Mix 4a How many lines of symmetry for each shape?

39 Mix 5a How many lines of symmetry for each shape?

40 Mix 6a How many lines of symmetry for each shape?

41 Tracing 1a Reflections

42 Tracing 2a Reflections

43 Tracing 3a Reflections


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