👉 A spirogram is a geometric shape with 12 equal sides and 10 vertices. It is named after the Greek letter sigma (sigma), which stands for "spiral." The spirogram is a type of fractal that can be created by recursively adding points on a grid. In mathematics, a spirogram is often used to represent recursive sequences or patterns in nature. For example, if we consider the sequence of numbers 2, 4, 8,
