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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 got rotational symmetry . This square has got rotational symmetry. It looks exactly the same four times in a full turn. - PowerPoint PPT Presentation
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RotationaRotational l
SymmetrySymmetry
Rotational SymmetryRotational Symmetry
If, when you rotate a shape, it looks If, when you rotate a shape, it looks exactly the same as it did in its original exactly the same as it did in its original position, then we say that the shape has position, then we say that the shape has got got rotational symmetryrotational symmetry..
This square has got rotational symmetry.This square has got rotational symmetry.
It looks exactly the same four times in a full turn.It looks exactly the same four times in a full turn. It has got rotational symmetry It has got rotational symmetry order 4order 4..
Rotational SymmetryRotational Symmetry
Does this rectangle have rotational symmetry?Does this rectangle have rotational symmetry?
It looks exactly the same twice in a full turn.It looks exactly the same twice in a full turn. It has got rotational symmetry It has got rotational symmetry order 2order 2..
Yes, it fits!No, it doesn’t fitNo, it doesn’t fitYes, it fits!
Click to rotate the rectangle.Click to rotate the rectangle.
Rotational Symmetry in Rotational Symmetry in the Alphabetthe Alphabet
Which letters have got rotational symmetry?Which letters have got rotational symmetry?
A B C D E F G H I
J K L M N O P Q R
S T U V W X Y Z
Click to see the answers.Click to see the answers.
Order 2 Order 2 Order 2
Order 2 Order 2 Order 2
Order 2
Rotational Symmetry all Rotational Symmetry all around usaround us
Which road signs have got rotational symmetry?Which road signs have got rotational symmetry?
Click to see the answers.Click to see the answers.
Rotational Symmetry all Rotational Symmetry all around usaround us
Click to see the road signs with rotational symmetry.Click to see the road signs with rotational symmetry.
Order 3 Order 2 Order 2
Rotational Symmetry all Rotational Symmetry all around usaround us
Click to see more road signs with rotational symmetry.Click to see more road signs with rotational symmetry.
Order 4 Order 3 Order 2
Rotational Symmetry all Rotational Symmetry all around usaround us
Click to see more road signs with rotational symmetry.Click to see more road signs with rotational symmetry.
Order 3 Order 2
Rotational Symmetry Rotational Symmetry with Pentominoeswith Pentominoes
If you don’t know what a pentomino If you don’t know what a pentomino is, then is, then click here.click here.
If you have done the pentominoes If you have done the pentominoes activity before, then you will know activity before, then you will know what a pentomino is and how many what a pentomino is and how many different pentominoes there are.different pentominoes there are.
Here they are ...Here they are ...
Rotational Symmetry Rotational Symmetry with Pentominoeswith Pentominoes
Which Pentominoes have got rotational symmetry?Which Pentominoes have got rotational symmetry?
Sort them according to their rotational symmetry.Sort them according to their rotational symmetry.
Rotational Symmetry with Rotational Symmetry with PentominoesPentominoes
Rotational Symmetry Order 2Rotational Symmetry Order 2 Rotational Symmetry Order 4Rotational Symmetry Order 4
Click to start sorting
Rotational Symmetry with Rotational Symmetry with 7-Pin Polygons7-Pin Polygons
If you don’t know what a 7-pin If you don’t know what a 7-pin polygon is, then polygon is, then click here.click here.
If you have done the 7-pin polygons If you have done the 7-pin polygons activity before, then you will know activity before, then you will know what a 7-pin polygon is and how what a 7-pin polygon is and how many different ones there are.many different ones there are.
Here they are ...Here they are ...
Rotational Symmetry with Rotational Symmetry with 7-Pin Polygons7-Pin Polygons
Which 7-Pin Polygons have got rotational symmetry?Which 7-Pin Polygons have got rotational symmetry?Sort them according to their rotational symmetry.Sort them according to their rotational symmetry.
Rotational Symmetry with 7-Rotational Symmetry with 7-Pin PolygonsPin Polygons
Rotational Symmetry Rotational Symmetry Order 2Order 2
Rotational Symmetry Rotational Symmetry Order 6Order 6
Rotational Symmetry Rotational Symmetry Order 3Order 3
Click to start sorting
Now you know all about Now you know all about rotational symmetry!rotational symmetry!
END OF PRESENTATIONEND OF PRESENTATION
PentominoesPentominoes
A pentomino is made out of five squares A pentomino is made out of five squares that are connected along at least one edge.that are connected along at least one edge.
These are NOT pentominoes.
Here is an example of a pentomino.
How many different pentominoes can you find?
Click here to return to line symmetry.
7-Pin Polygons7-Pin Polygons
Here is an arrangement of 7 pins.Here is an arrangement of 7 pins.
Here are some examples of 7-pin polygons.
How many different 7-pin polygons can you find?
Click here to return to line symmetry.
A 7-pin polygon is a closed shape with A 7-pin polygon is a closed shape with straight sides with corners on the pins.straight sides with corners on the pins.
END OF PRESENTATIONEND OF PRESENTATION
