Free Combined transformations PDF Worksheets & Answers
Grade 6 • Topic 6NExplanation:
For combined transformations, apply the first transformation to the original shape to draw an intermediate image, then apply the second transformation to that intermediate image.
When asked to describe the single transformation that maps the starting shape directly onto the final shape, check whether the orientation has flipped (reflection) or stayed the same (rotation/translation). Two reflections in perpendicular axes (such as the x-axis and y-axis) are equivalent to a rotation of 180° about their intersection.
Example 1: Shape A has corner (2, 3). It is reflected in the x-axis to give B, then B is reflected in the y-axis to give C. Describe the single transformation from A to C.
Solution:
Example 2: Shape P is translated by vector (4, −1) to give Q, then Q is translated by (−6, 5) to give R. Describe the single transformation from P to R.
Solution:
GCSE Past Paper Combined transformations Questions & Answers
Triangle B is rotated 90° clockwise about the point (1, 2) to give triangle C.
Describe fully the single transformation that maps triangle A onto triangle C.
Triangle B is rotated 90° clockwise about the point (1, 2) to give triangle C.
Describe fully the single transformation that maps triangle A onto triangle C.
Worked Solution & Mark Scheme (3 marks)
B has vertices (3, –2), (4, –2), (4, 0) M1
Rotating B 90° clockwise about (1, 2) gives C at (–3, 0), (–3, –1), (–1, –1)
Single transformation from A to C is a rotation 90° clockwise about centre (–4, 1). C1
Under the combined transformation, two vertices of the square ABCD are invariant.
Describe fully one possible rotation.
Under the combined transformation, two vertices of the square ABCD are invariant.
Describe fully one possible rotation.
Worked Solution & Mark Scheme (2 marks)
Rotating 90° clockwise about (–1, 0) maps B'(–5, 4) → B(3, 4) and D'(–3, 2) → D(1, 2), leaving B and D invariant. C1