Triangles · Class 9 · CBSE Mathematics

If triangle ABC cong triangle PQR, then which of the following is not true?

Practice question from Triangles (Class 9 · CBSE Mathematics), with the correct answer and a step-by-step solution.

easy · MCQ · Q-A910CE

If △ABC≅△PQR\triangle ABC \cong \triangle PQR, then which of the following is not true?

  1. A.BC=QRBC = QR
  2. B.∠B=∠Q\angle B = \angle Q
  3. C.CA=PRCA = PR
  4. D.AB=QRAB = QRCorrect answer

Solution

When two triangles are congruent, their corresponding parts are equal. Given △ABC≅△PQR\triangle ABC \cong \triangle PQR, the corresponding side of ABAB is PQPQ, not QRQR. Therefore, AB=QRAB = QR is incorrect.

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