Each of the interior angles of a regular polygon is 140°. Calculate the sum of all the interior angles of the polygon. By: Sunday|Published on: Jan 6|Categories: Mathematics WAEC| 0 comments A. 1080° B. 1260° C. 2160° D. 1800° Correct Answer: Option B B. 1260° Users Also Read These:The surveying instrument used for measuring…The survey instrument used for measuring horizontal…A ray of light is incident normally on a plan…The correct arrangement of the layers of the earth…European traders did not venture into the interior…SEE ALSO If given two points A(3, 12) and B(5, 22) on a x-y plane. Find the equation of the straight line with intercept at 2.