Answer:
Answer is 360
to find each of the angles take 360 ÷ by the number of sides , in this case is 360 ÷ 6 = 60
Given that 
, and 
, this first step can be to make the equations equivalent to one another. As you can see, each equation is equal to a constant, e. Therefore, we can conclude that the equations can be equal to one another as well ( transitivity ).
_____
Nice and simple question we have here! The step that can be used to find the solution should be 
.
