a smiling baker carefully removes perfectly round donuts from a large mixing bowl using tongs. She places each circular donut onto a cooling rack where dozens of other round pastries wait. The donuts maintain their perfect circular shape as steam rises gently from their golden surfaces. Behind her, round bread loaves sit on shelves while round pizza dough spins in the air from another baker's hands. A young apprentice watches in amazement at how every baked good maintains its perfectly curved circular form. objects having a curved shape like a circle or ball