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0580/21 Oct/Nov 2022, Question 14: Describing Transformations

Cambridge IGCSE Mathematics 0580 · Paper 21 (Extended) · Calculator · 3 marks

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The question, in short

Using the grid with triangles A and B, state the one transformation that takes A exactly onto B, giving all defining details.

Summarised in our own words. Use the official paper for the exact wording and the diagram.

Solution · 3 marks

  1. 1A has vertices (2, 1), (4, 1), (4, 2); B has vertices (3, 4), (3, 6), (4, 4)
  2. 2The shape is turned through a quarter turn clockwise, so it is a rotation
  3. 3Centre found where perpendicular bisectors of corresponding points meet: (5, 3)
  4. 4Rotation, 90° clockwise, centre (5, 3)

AnswerRotation, (5, 3), 90° clockwise

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