ECZ 2022 · O-Level Paper 1 — Symmetry
The diagram below shows a regular triangular prism. Describe the symmetry of the prism.
- A. Rotational symmetry of order 6 about the axis shown
- B. Rotational symmetry of order 2 about the axis shown
- C. Rotational symmetry of order 3 about the axis shown
- D. No rotational symmetry
Verified working — step 1
A regular triangular cross-section matches itself after turns of 120°, 240° and 360° about the central axis.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.
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