If the figure is a regular polygon find the value of x

x=11

(see picture)

Hope this helps!

The given figure is of a regular octagon, and we know that each interior Angle of a regular octagon is equal to :

so, interior angle of octagon = 135°

now, according to above question,

Exterior Angle (6x - 21)° is forming linear pair with interior Angle of the octagon, so their sum will be equal to 180° .

-14 is the answer

hope this : ))

6e14 is the answer.