The measure of interior angle at vertex F is equal to 72 degrees, the correct option is D.
A hexagon is a polygon with six sides. The sum of the interior angles of a hexagon is equal to 720 degrees.
The angle of the hexagon is given in terms of x,
The sum of the angle is equal to 720 degrees
4x+4x+4x+4x+2x+2x = 720
20x = 720
x = 36
2x = 72 degree
Therefore, the measure of interior angle at vertex F is equal to 72 degrees.
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