👉 Skiagrams are a type of geometric pattern that is often used in art, architecture, and design. They consist of vertical lines that form an elongated shape, with each line connecting two previous lines in a specific order. The shapes can be any size or shape, but they typically have a repeating pattern at the base. Skiagrams are also known as "U-shapes" because they look like the U-shape of a mountain when viewed from above.