Key learning points

1. The length of the lines do not change when rotated
2. The angles inside an object do not change when rotated
3. When an object is rotated, its image is congruent
4. Unless a full rotation occurs, the object and its image will not have the same orientation

Keywords

• Rotation - The rotation of an object is the turning of an object by a fixed amount and around a fixed point (called the centre of rotation).

Common misconception