Exploring reflections and translations (Part 1)

Maths

Transformations

How many types of transformations are there?

It is easier to tell if a shape has been translated or reflected if the vertices are marked in a colour or labelled

Reflections and Translations always look the same

Reflections and Translations never look the same

You can easily tell if congruent shapes have been reflected or translated

It is only hard to tell if a shape has been translated or reflected if the shape is a quadrilateral

It is only hard to tell if a shape has been translated or reflected if the shape is a rectangle

It is only hard to tell if a shape has been translated or reflected if the shape is regular

If a right angled triangle has been reflected along the x axis then it is not obvious whether it has been reflected and not translated

If a right angled triangle has been reflected along the y axis then it is not obvious whether it has been reflected or translated

If an equilateral triangle has been reflected along the y axis then it is not clear whether it has been reflected or translated

If an equilateral triangle has been reflected along the y axis then it is obvious that it has been reflected and not translated

It could have been reflected or translated

If the vertices of triangle A are (-5,3), (-5,1) and (-2,1) and the vertices of triangle B are (-5,-1), (-5,-3) and (-2,-3), which of the below best describes the transformation from A to B?

Which of the below mean the same as a line of reflection?

The distance between the mirror line and A is 12 squares

The distance between the mirror line and A is 24 squares

The distance between the mirror line and A' is 6 squares

The distance between the mirror line and A' is also 12 squares

If the distance between point A and its reflected point (A') is 12 squares then which of the statements below is true?

The distance between B and B' is 18 squares

The distance between B and B' is 4.5 squares

The distance between B and B' is also 9 squares

The distance between the mirror line and B' is 4.5 squares

If distance between point B and a mirror line is 9 squares, then which of the following statements below is true?

The coordinates (-4,-4) and (-4,-2) are reflected, after reflection (-4,-4) becomes (3,3) and (-4,-2) becomes (1,3), which of the following statements is true?

A point with coordinates (1,-4) and (1,-3) are reflected to become (-3,-4) and (-3,-3) what do we know about the mirror line?

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Exploring reflections and translations (Part 1)

Lesson outcome