waecmaths question:
The interior angles of a polygon are 3xo, 2xo, 4xo, 3xo and 6xo. Find the size of the smallest angle of the polygon
Option A:
80o
Option B:
60o
Option C:
40o
Option D:
30o
waecmaths solution:
The sum of n - sided interior angle of a polygon is givenFor 5-sided figure, the sum of the interior angle$(5-2)\times 180{}^\circ =540{}^\circ $$3x{}^\circ +2x{}^\circ +4x{}^\circ +3x{}^\circ +6x{}^\circ =540{}^\circ $$18x{}^\circ =540{}^\circ $$x=30$$\text{The smallest angle is }2x{}^\circ =2(30{}^\circ )=60{}^\circ $
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