👉 The duodecagon, also known as a dodecagonal number, is a figurate number that represents the number of diagonals in a convex polygon with \(n\) sides. A dodecagon has 12 sides and each side forms a triangle with half its length (since it's made up of 3 straight segments). Therefore, a dodecagon has 12 triangles. The formula for calculating the number of diagonals in a polygon is given by:
