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

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Whiteboardmaths.c Whiteboardmaths.c om om © 2004 All rights reserved 5 7 2 1

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

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Whiteboardmaths.comWhiteboardmaths.com

© 2004 All rights reserved

57 2

1

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1 LoSOne Line of Symmetry

Vertical lines of symmetry

Horizontal lines of symmetry

Diagonal lines of symmetry

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2 LoS

2 Lines of Symmetry

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RectangleThe 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

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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!

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3 LoS 3 Lines of Symmetry

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4 LoS 4 Lines of Symmetry

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5 LoS

5 Lines of Symmetry

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6 LoS 6 Lines of Symmetry

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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.

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Mix 1

How many lines of symmetry for each shape?

4 3 6

5 8

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Mix 26 5 3

4 5

How many lines of symmetry for each shape?

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Mix 32 5 3

2 4

How many lines of symmetry for each shape?

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Mix 4

How many lines of symmetry for each shape?

6 2 4

1 2 1

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Mix 5

How many lines of symmetry for each shape?

1 2 4

5 3

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Mix 6

How many lines of symmetry for each shape?

4 8 1

6 1

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And a big thankyou to all our friends!

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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.

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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.

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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

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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.

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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.

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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

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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

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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.

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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.

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WS 1

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WS 2

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Ws 3

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WS 4

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WS 5

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WS 6

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Mix 1a

How many lines of symmetry for each shape?

4 3 6

5 8

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Mix 2a6 5 3

4 5

How many lines of symmetry for each shape?

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Mix 3a2 5 3

2 4

How many lines of symmetry for each shape?

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Mix 4a

How many lines of symmetry for each shape?

6 2 4

1 2 1

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Mix 5a

How many lines of symmetry for each shape?

1 2 4

5 3

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Mix 6a

How many lines of symmetry for each shape?

4 8 1

6 1

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Tracing 1a

Reflections

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Tracing 2a

Reflections

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Tracing 3a

Reflections