ECZ 2025 · GCE Paper 1 — Circle Theorems
Use the diagram. A, B, C, D and E lie on a circle with centre O. angle ADB = 18°, angle EAD = 31°, and BC = CD. Find angle EOD.
- A. 118°
- B. 31°
- C. 62°
- D. 90°
Verified working — step 1
angle EAD = 31°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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