Rotating shapes

a. What 3 things do you need to say to describe a rotation?

1. Where the centre of rotation is

2. How much it is turned through, (90º or 1/4 etc)

3. If the turn is clock wise or anticlockwise (negative or positive)

b. Explain what centre of rotation means

The centre of rotation is the point where the shape is turned from

c. Now use these 3 things to describe the rotation on Page 1 of the myimaths lesson (i.e. describe the rotation of the triangle)

• Centre of rotation is (1, 1)
• Turn 90º or 1/4
• Turn clockwise (negative)