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

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

A transformation is a process that may change the size, orientation or position of a shape.

If one shape can fit exactly on top of another using rotation, reflection or translation, then the shapes are congruent.

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

Checking understanding of basic transformations

Maths

In this unit, pupils explore the effects of different transformations and whether the transformed shape is congruent or similar to the original shape. This is built on in the future unit where pupils formalise the criteria for determining congruence in triangles and study rotational symmetry

In this unit, pupils translated and reflected simple shapes on the full coordinate grid. In this unit, these processes are formalised and rotation and enlargement are introduced

Transformations

A transformation is a process that may change the size, orientation or {{ }} of a shape.

This L shape is flipped over once, which of these could be the image?

The quadrilateral ABCD is transformed. How should the image of vertex A be labelled?

Which of these show a pair of congruent shapes?

Regardless of whether an object is flipped, twisted or moved which properties are invariant?

Which figure does this description match: The object has been twisted half a turn.

In this triangle, the largest interior angle is located at which vertex?

A half turn means __________ $$^{\circ}$$

The vertices in the quadrilateral PQRS has been labelled in the {{ }} direction. 

This lesson will soon be taken down.

Checking understanding of basic transformations

Lesson outcome