Reflecting objects | Maths | Quizalize & Oak National Academy

Starter quiz

The ______ is equidistant from corresponding points on the object and its reflected image.

'line of reflection' ✓
Which of these coordinates is suitable for defining the location of the line of reflection for this reflection?

(6, 0)

(2, 6) ✓

(7, 6) ✓

(12, 8)

(12, 4)
Complete this sentence for the following description of a reflection: "A __________ reflection with line of reflection passing through the coordinates (9, 0) and (9, 30)"

horizontal ✓

vertical

diagonal
Which of these coordinates lies on the line of reflection for this example?

(10, 4) ✓

(6, 2)

(14, 2)

(10, 2) ✓

(7, 7)
Which of these statements are valid for describing this reflection?

a horizontal reflection

a vertical reflection ✓

with a line of reflection through the points (3, 3) and (3, 11)

with a line of reflection through the points (4, 1) and (4, 13)

with a line of reflection through the points (3, 7) and (6, 7) ✓
Which of these coordinates is suitable for defining the location of the line of reflection for this reflection?

(6, 2)

(9, 5) ✓

(12, 8)

(7, 7) ✓

(6, 8) ✓

Which of these properties change when an object is reflected?

lengths of sides

size of angles

orientation ✓

position ✓

sense ✓
Which of these things must you draw onto the tracing paper when reflecting using tracing paper?

the object ✓

the $x$ -axis or $y$ -axis

the line of reflection ✓

an extra × marked on the object

an extra × marked on the line of reflection ✓
Write down the coordinates for the reflection of vertex A in the line of reflection drawn.

'(16, 7)' ✓
Write down the coordinates for the reflection of vertex B in the line of reflection drawn.

'(12, 9)' ✓
This object is reflected in a line passing through the coordinates (10, 0) and (10, 5). Write down the coordinates for the reflection of vertex C in the line of reflection.

'(18, 6)' ✓
This object is reflected in a line passing through the coordinates (0, 8) and (5, 3). Write down the coordinates for the reflection of vertex D in the line of reflection.

'(7, 6)' ✓

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Diagonal reflections that incorrectly look like rotations or translations of the object.

False reflections that look like this are due to students not counting diagonals of grid squares, perpendicular to the mirror line.

Line of reflection - The line of reflection is the line about which an object is reflected. The object and image are equidistant from the line of reflection.