Specification References: G1.7h G1.7h Describe and transform 2D shapes using single or combined rotations, reflections, translations, or enlargements by a positive scale factor and distinguish properties that are preserved under particular transformations. Use positive fractional and negative scale factors. |
Foundation tier will be restricted to single transformations.
The direction of rotation will always be given.
Column vector notation should be understood.
Lines of symmetry on a Cartesian grid will be restricted to x = a, y = a, y = x, y = –x.
Scale factors for enlargements will be restricted to positive integers at Foundation tier.
Scale factors for enlargements can be positive fractional or negative at Higher tier.
Enlargements may be drawn on a grid, or on a Cartesian grid, where the centre of enlargement will always be at the intersection of two grid lines.
When describing transformations, the minimum requirement is:
Rotations described by centre, direction (unless half a turn) and an amount of turn (as a fraction of a whole or in degrees).
Reflection by a mirror line.
Translations described by a vector or a clear description such as 3 squares to the right, 5 squares down.
Candidates will always be asked to describe a single transformation but could be asked to do a combined transformation on a single shape.
Candidates could be asked to describe a single transformation equivalent to combination of transformations.