Question 133
In a certain polygon the sum of the interior angles equals $4140^{\circ}$. What is the number of diagonals of this polygon?
(A) 250
(B) 275
(C) 205
(D) 725
(E) 257
(A) 250
(B) 275
(C) 205
(D) 725
(E) 257
MathNet 2019-part-06 — 184 problems (EN–VI) Question 133
Math Olympiad Vault · MathNet 2019-part-06 — 184 problems (EN–VI)