Checking understanding of basic transformations | Maths

Starter quiz

Which is bigger: 4.2 cm or 4 cm?

4.2 cm ✓

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

A

B ✓

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

${90^{\circ}}$

${180^{\circ}}$ ✓

${270^{\circ}}$
Match the edges to the correct lengths.

QP

⇔

4.9 cm ✓

PS

⇔

5.4 cm ✓

RQ

⇔

3.3 cm ✓

SR

⇔

5.8 cm ✓
Select all the quadrilaterals.

square ✓

rectangle ✓

pentagon

triangle

trapezium ✓
The vertices in the quadrilateral PQRS has been labelled in the ______ direction.

'anticlockwise' ✓

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

'position' ✓
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?

'A'' ✓
Which of these show a pair of congruent shapes?
Regardless of whether an object is flipped, twisted or moved which properties are invariant?

angles ✓

lengths ✓

orientation

position

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

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Students may believe two shapes are congruent based purely on the shape and not the size as well.

Consider squares - all squares have the same angles and are visually identical but if the lengths are different they're not congruent.

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.
Transformation - A transformation is a process that may change the size, orientation or position of a shape.
Congruent - If one shape can fit exactly on top of another using rotation, reflection or translation, then the shapes are congruent.
Invariant - A property of a shape is invariant if that property has not changed after the shape is transformed.