ECZ 2013 · O-Level Paper 1 — Symmetry
The diagram shows a 4 by 4 grid with two squares already shaded. Which two further squares must be shaded so that the figure has two lines of symmetry?
- A. Row 1 column 4, and row 3 column 2
- B. Row 1 column 1, and row 3 column 3
- C. Row 2 column 2, and row 4 column 4
- D. Row 1 column 2, and row 3 column 4
Verified working — step 1
The shaded squares sit at row 2 column 3 and row 4 column 1, both on the diagonal running from the top right to the …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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