How_To_Be_Good_At_Math

GEOMETRY • ROTATION 263

Make a rotation creation

All you need to make your own rotation pattern is some card

and paper, a pin, a pair of scissors, and a pencil.

Draw a simple

shape onto

card and cut it out.

Put a pin through the

the shape to make

the centre of rotation.

Pin the shape to

some paper and

draw round the outline.

TRY IT OUT

Seven rotations

45° Angle of rotation

Four rotations

72° Angle of rotation

Eight rotations

40° Angle of rotation

Rotation patterns

We can make patterns by rotating a shape lots of

times around the same centre of rotation. This T

shape makes different patterns depending on the

centre and angle of rotation we choose.

Rotate the shape a little

and draw round it again.

Repeat until you have a pattern

you like!

Centre of

rotation Angle of

rotation

Angle of

rotation

Angle of

rotation

The centre of

rotation can be

outside the shape

Starting shape

for all three

patterns

Centre of

rotation

262_263_Rotation.indd 263 29/02/2016 18:06