Year 5

# Using coordinates to describe position after reflection

Year 5

# 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?

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

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

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?

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

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?

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

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

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)

(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)

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