👉 A sketchist is a type of graph that has a single vertex and one edge. It is often used in computer graphics to represent simple geometric shapes, such as triangles or circles, without having any loops or crossings. Sketchists are also known as "single-edge graphs" because they have only one connected component, which is the set of vertices. This makes them particularly useful for representing simple geometric shapes like triangles and circles. In terms of graph theory, a sketchist can be thought of as an