ECZ 2015 · O-Level Paper 1 — Similarity and Congruency
In the triangle shown, PQ = QR, angle QPR = (3x + 31)° and angle QRP = (91 − 2x)°. Find the size of angle PQR.
- A. 46°
- B. 67°
- C. 12°
- D. 44°
Verified working — step 1
Equal sides PQ and QR make the base angles equal - equate them to find x, then let the triangle's 180° give the apex.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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