Answer:
25
Step-by-step explanation:
Sum of all interior angles of a polygon
= (n - 2) 180⁰
Given that the sum of the interior angles is 4140ᵒ, then
4140⁰ = (n - 2) 180⁰
Divide both sides by 180⁰
n - 2 = 23
Add +2 to both sides
n = 23 + 2
n = 25
Therefore, the polygon has 25 sides.
