BECE Mathematics 2023 Objective — Question 60

Question 60 of 120 from the Basic Education Certificate Examination (Junior WAEC) (BECE) Mathematics 2023 Objective paper, with the correct answer and a full explanation.

In the figure below, lines AB and CD are parallel. Which of the following is not true?

A. a = bCorrect
B. a = c
C. b = c
D. b = d
E. d + a = 180

Explanation

a and c are vertically opposite (equal). b and c are corresponding angles (equal). b and d are alternate angles (equal). d + a = 180° (angles on a straight line). a and b are co-interior angles, so a + b = 180°; a = b is not true.

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