BECE Mathematics 2022 Theory — Question 3

Question 3 of 4 from the Basic Education Certificate Examination (Junior WAEC) (BECE) Mathematics 2022 Theory paper, with the correct answer and a full explanation.

2(a) Calculate the 4th angle of a quadrilateral whose other three angles are 52°, 120° and 125°.

Model answer

The angles of a quadrilateral add up to 360°. Sum of the three given angles = 52° + 120° + 125° = 297° 4th angle = 360° - 297° = 63°

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