The angles of a polygon are given by 2x, 5x, x and 4x respectively. The value of x is
Since there are 4 angles given, the polygon is a quadrilateral.
Sum of angle in a quadrilateral = 360°
\(\therefore\) 2x + 5x + x + 4x = 360°
12x = 360°
x = 30°
There is an explanation video available below.
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