Frame geometry refers to the arrangement and proportions of the various components that make up a frame, particularly in bicycles. It includes measurements such as the length of the top tube, seat tube, and chainstays, which influence the bike's handling, comfort, and fit for the rider. Different types of frame geometries cater to specific riding styles, such as road cycling, mountain biking, or commuting. For instance, a more relaxed geometry is often found in touring bikes for comfort over long distances, while a more aggressive geometry is typical in racing bikes for speed and aerodynamics.