BECE Mathematics 2023 Objective — Question 49

Question 49 of 120 from the Basic Education Certificate Examination (Junior WAEC) (BECE) Mathematics 2023 Objective paper, with the correct answer and a full explanation.

Which of the following angles cannot be constructed using a ruler and a pair of compasses only?

A. 30°
B. 45°
C. 70°Correct
D. 90°
E. 120°

Explanation

30°, 45°, 90° and 120° can be built from 60° and 90° by bisecting or adding. 70° cannot.

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