The younger of A Square’s two hexagonal grandchildren. He exhibits unusual insight and, thus, perfect angularity. After A Square teaches his grandson the concept of squaring through the geometrical creation of one large square with sides three units long, made from nine individual squares, his grandson inquires about the significance of three-to-the-third—a question that could lead to an understanding of three-dimensional space—and baffles his grandfather. Despite this early spirit of curiosity and insight, A Square’s grandson is later frightened by the authorities of Flatland and retracts his questions about three-to-the-third.