Question

11. (a) Find the equation of the line that passes through the origin and the point of intersection of the lines x + 2y = 7 and x - y = 4.

(b) The ratio of an interior angle to an exterior angle of a regular polygon is 4 : 1. Find the:
(i) number of sides;
(ii) value of the exterior angle;
(iii) sum of the interior angles of the polygon.

Accepted Answer

(a) y = x/5 (or 5y - x = 0)
(b)(i) n = 10
(b)(ii) Exterior angle = 36°
(b)(iii) Sum of interior angles = 1,440°

WAEC Mathematics 2024 Theory — Question 11

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