Key learning points

1. More than one transformation may have taken place.
2. If the size has changed, one shape may be an enlargement of the other.
3. If the orientation has changed, one shape may be a rotation of the other.
4. If the shapes are mirrored, one shape may be a reflection of the other.
5. If the shapes look identical but are in different places, one may be a translation of the other.

Keywords

• Object - The object is the starting figure before a transformation has been applied.

• Image - The image is the resulting figure after a transformation has been applied.

• Vector - A vector can be used to describe a translation.

• Invariant - A property of a shape is invariant if that property has not changed after the shape is transformed.

Common misconception