WAEC Mathematics
The angles of a polygon are x, 2x, 2x, (x+30°), (x+20°), and (x-10°). Find the value of x.
a.
45°
b.
84°
c.
85°
d.
95°
Correct answer: C
Since the polygon has 6 six angles, it is a six sided polygon(a hexagon). The sum of the angles of a hexagon is (6-2)×180=720. This means that