www.numeracysoftware.com Rotational Symmetry www.numeracysoftware.com Rotational Symmetry If, when you rotate a shape, it looks exactly the same as it.

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Rotational Symmetry.

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Presentation transcript:

Rotational Symmetry

Rotational Symmetry If, when you rotate a shape, it looks exactly the same as it did in its original position, then we say that the shape has rotational symmetry. This square has rotational symmetry.

There are four points of rotation that a figure can have. 1/4 = 90 

1/3 = 120 

1/2 = 180 

3/4 = 270 

Rotational Symmetry in the Alphabet Which letters have rotational symmetry? ABCDEFGHI JKLMNOPQR STUVWXYZ Click to see the answers.

Rotational Symmetry all around us Which road signs have rotational symmetry? Click to see the answers.

Rotational Symmetry all around us Click to see the road signs with rotational symmetry.

Rotational Symmetry all around us Click to see more road signs with rotational symmetry.

Rotational Symmetry all around us Click to see more road signs with rotational symmetry.

Rotational Symmetry with Pentominoes Which Pentominoes have got rotational symmetry?

Now you know all about rotational symmetry! END OF PRESENTATION

END OF PRESENTATION