Rotation © T Madas.

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Presentation transcript:

Rotation © T Madas

What is the meaning of Rotation? Rotate the rectangle: 90° Clockwise About C O c Centre of Rotation I Rotation is a Transformation © T Madas

What is the meaning of Rotation? Rotate the triangle: 90° Anti-clockwise About C O I c Rotation produces congruent shapes © T Madas

Formal Rotation © T Madas

How do we rotate a shape in general? Rotate this shape: 60° Anti-clockwise About C I O 60° c © T Madas

How do we rotate a shape in general? Rotate this shape: 60° Anti-clockwise About C I O 60° c © T Madas

Rotate this shape: 90° Anti-clockwise About P P © T Madas

Rotate this shape: 90° Anti-clockwise About P P © T Madas

© T Madas

P Rotate this shape: 60° Clockwise About P 90 10 20 30 40 180 170 160 160 30 150 40 140 50 130 60 120 70 110 80 100 90 P © T Madas

P Rotate this shape: 60° Clockwise About P 90 10 180 20 170 160 30 150 160 30 150 40 140 50 130 60 120 70 110 80 100 90 P © T Madas

P Rotate this shape: 60° Clockwise About P 90 10 180 170 20 160 30 150 160 30 150 40 140 50 130 60 120 70 110 80 100 90 P © T Madas

Rotate this shape: 60° Clockwise About P P © T Madas

Rotate this shape: 60° Clockwise About P P © T Madas

Finding the Centre of Rotation © T Madas

Why does it work? The shapes below have been produced by rotation. Find the centre of rotation Why does it work? © T Madas

The shapes below have been produced by rotation. Find the centre of rotation © T Madas

The shapes below have been produced by rotation. Find the centre of rotation © T Madas

The shapes below have been produced by rotation. Find the centre of rotation © T Madas

© T Madas