ECZ 2014 · O-Level Paper 1 — Geometrical Transformations

The diagram shows two shapes ABCD and PQRS on an XOY plane. Describe fully the single transformation which maps ABCD onto PQRS.

Diagram for ECZ 2014 · O-Level Paper 1
  • A. Rotation of 90° anticlockwise about (−1, 2)
  • B. Rotation of 90° clockwise about (−1, 2)
  • C. Rotation of 90° anticlockwise about the origin
  • D. Rotation of 180° about (−1, 2)

Verified working — step 1

Compare one edge with its image: AB points right, PQ points up - a quarter turn anticlockwise. Then locate the centre.

The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.

Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

Have a different question?

Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.

Search any past-paper question

More Geometrical Transformations questions from past papers