1. TRANSFORMATIONS by Rose
REFLECTION (flip)
ROTATION (turn)
TRANSLATION (slide)

2. R R R R R E F L E C T I O N Click to reflect vertically
Click to reflect horizontally R
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3. Click to see the reflection
Line of reflection
Click to see the reflection
What you should notice!
The blue and red braces are equidistant from the line of reflection.
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4. Look carefully at the labelling of the diagram.
reflection D C
A hexagon ABCDEF is drawn. Click to see it reflected in the edge AF E B F A B’ D’ C’ A’ E’ F’
Look carefully at the labelling of the diagram.
What can you say about F and F’ and A and A’ ?
Now draw the hexagon and reflect it in the edge BC. Use pen and paper on the document Transformations.doc
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5. R O T A T I O N A B B’ A’ A B
Click to see the rotation of the moon crescent 90o through A
Imagine you placed a pin at point A and then turned the crescent in a clockwise direction.
clockwise
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6. Click to see the rotation of the green crescent through 1800 B’’
Click again for the next rotation.
How many degrees has the yellow crescent been rotated from the original green crescent?
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7. Changing the centre of rotation
Click to start
The centre of rotation is marked with a red dot.
Remember that they both came from this basic shape!
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8. rotation
A great way to learn about rotations is to cut out shapes and practice the turns.
Download the Word document called Rotations.doc with shapes for you to cut out and turn.
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9. Slide the rectangle 4 units up
T R A N S L A T I O N
1st move
Click for 1st move
Task:
Slide the rectangle 4 units up
AND 5 units to the right
Final position
Click for final move
Start at a vertex and move from that point (in this case – bottom left)!
5 right
4 up
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10. Slide the rectangle 3 units right
translation
Click to begin
Task:
Slide the rectangle 3 units right
AND 2 units down
3 right
2 down
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11. Combination transformations
Original
Original
This shape is to be reflected horizontally then rotated 90o
Final
position
1st
position
Click to begin
1. Where was the centre of rotation for the figure?
2. Could a different transformation have been used to obtain the same result?
Original
Final
position
So this
transformed to
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next slide

12. Original is coloured yellow Click to see the show again
Exercise: What transformation(s) have been used to obtain these shapes? 1. 3.
Original is coloured yellow 2. 4.
This is the last slide
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