4MA1/2F Jan 2020, Question 14: Describing Transformations
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2F (Foundation) · Calculator · 2 marks
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The question, in short
Using the grid, describe completely the one transformation that takes triangle A onto triangle B.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1B is the same size as A but upside down, so it is a rotation of 180°
- 2Each vertex of A maps to its negative: (−3, −3) → (3, 3), (−2, −5) → (2, 5)
- 3(x, y) → (−x, −y) is a rotation about the origin
- 4Rotation 180° centre (0, 0)
AnswerRotation 180° centre (0, 0)
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