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:One of the following surveying instruments is used…In surveying; the instrument used to measure…SS1 Third Term Further Mathematics Lesson Note –…Which of the following surveying equipment is used…The survey instrument used for measuring horizontal…SEE ALSO A binary operation Δ is defined by a Δ b = a + 3b + 2. Find (3 Δ 2) Δ 5