<span>The sum of the measures of the interior angles of a polygon with n sides is (n – 2)180.The measure of each interior angle of an equiangular n-gon is.<span>If you count one exterior angle at each vertex, the sum of the measures of the exterior angles of a polygon is always 360°</span></span>
Divide them on a calculator
-10,2 is your answer when you simplify it
<z = 180 - 43
<z = 137
answer
<z = 137 degrees
This should help just try to use this
