The original scone was round and flat, usually the size of a medium size plate. It was made with unleavened oats and baked on a griddle, then cut into triangle-like quadrants for serving.
Scones sold commercially are usually round in shape, although some brands are hexagonal as this shape may be tessellated for space-efficiency. When prepared at home, they take various shapes including triangles, rounds and squares. The baking of scones at home is often closely tied to heritage baking. They tend to be made from family recipes rather than recipe books, since it is often a family member who holds the "best" and most-treasured recipe.