# Using coordinates to describe position after reflection

# Using coordinates to describe position after reflection

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## Lesson details

### Key learning points

- In this lesson, we will reflect shapes within the first 2 quadrants (positive and negative x axis) using coordinates.

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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 5 Questions

Q1.

Which of the following statements are correct?

Correct answer: Reflection and Translation are both types of transformations

Reflection and Translation are both types of transformations

Reflection and Translation are not types of transformations

Reflection is the only type of transformation

Translation is a type of transformation however Reflection is not

Q2.

Which of the following is a synonym of the word reflect?

Coordinating

Correct answer: Flip

Flip

Image

Translate

Q3.

If the vertices A and B were both 4 squares away from the mirror line, then which of the following statements is correct when they are reflected?

None of the above

Correct answer: Vertices A' and B' are also 4 squares away from the mirror line

Vertices A' and B' are also 4 squares away from the mirror line

Vertices C and D are 2 squares away from the mirror line

Vertices C' and D' are also 4 squares away from the mirror line

Q4.

Which of the following statements is correct?

Correct answer: A mirror line is a straight line which shows that both sides have exact reflective symmetry

A mirror line is a straight line which shows that both sides have exact reflective symmetry

A mirror line is a straight horizontal line which shows that both sides have exact reflective symmetry

A mirror line is a straight vertical line

A mirror line is a straight vertical line which shows that both sides have exact reflective symmetry

Q5.

If point A is 9 squares away from a mirror line and point B is exactly half way between point A and the mirror line then where is point B'?

4 squares away from the mirror line

Correct answer: 4.5 squares away from the mirror line

4.5 squares away from the mirror line

5.5 squares away from the mirror line

9 squares away from the mirror line

### 5 Questions

Q1.

Which of the following statements is correct?

Correct answer: The line of reflection can sometimes be horizontal or vertical

The line of reflection can sometimes be horizontal or vertical

The line of reflection is always horizontal

The line of reflection is always parallel with the x axis

The line of reflection is always vertical

Q2.

If we are reflecting a shape onto a vertical line of symmetry then which of the following statements is correct?

Both the x and y coordinates of the reflected shapes will change

Both the x and y coordinates of the reflected shapes will stay the same

Only the x coordinate will stay the same

Correct answer: Only the y coordinate will stay the same

Only the y coordinate will stay the same

Q3.

If we are reflecting a shape onto a horizontal line of symmetry then which of the following statements is correct?

Both the x and y coordinates of the reflected shapes will change

Both the x and y coordinates of the reflected shapes will stay the same

Correct answer: Only the x coordinate will stay the same

Only the x coordinate will stay the same

Only the y coordinate will stay the same

Q4.

If a shape is reflected across a horizontal line of reflection and one of the vertices of this shape with the co-ordinate (-4,6) is just 2 squares away from the line of reflection what would it's reflected coordinate be?

(-2, 6)

(-2, 8)

Correct answer: (-4, 2)

(-4, 2)

(4, -6)

Q5.

If a square is reflected across a horizontal line of symmetry where A (-6,7) reflects to ( -6,1) and B(-3,7) reflects to (-3,1), what are the reflected points of C and D?

(-3,7) and (-3,2)

(-6,3) and (-3,4)

Correct answer: (-6,4) and (-3,4)

(-6,4) and (-3,4)

(-6,4) and (-4,3)