the angles in a hexagon are 135, 62, 151, 140, x and x +6. find the measure of the missing angles.
the angles in a pentagon measure x-30,x+20,x-30, x+30 and x find the measure of each angle.
The sum of the interior angles of an n-gon is 180(n-2).
That's 540 for a pentagon and 720 for a hexagon.
So, add them up and solve for x.