A polyform is a plane figure consisting of multiple connected identical copies of a base shape, usually a convex polygon. The name of a polyform is often determined by its base polygon, which gives a natural classification. Wolfram|Alpha has the ability to specify one class of polyforms by fixing the order (the number of copies of the base polygon) and can compute properties for these objects.
Polyforms
Compute properties for a class of polyforms or refine the result by specifying the order.