So, corresponding sides and corresponding angles of congruent figures have the same measures. The measures of corresponding angles in similar figures are the same, but the measures of corresponding sides in similar figures are multiples of each other (i.e. they are proportional).
An industrial flywheel. A flywheel is a rotating mechanical device that is used to store rotational energy. Flywheels have an inertia called the moment of inertia and thus resist changes in rotational speed. The amount of energy stored in a flywheel is proportional to the square of its rotational speed. Energy is transferred to a flywheel by the application of a torque to it, thereby increasing its rotational speed, and hence its stored energy. Conversely, a flywheel releases stored energy by applying torque to a mechanical load, thereby decreasing the flywheel's rotational speed.
1 Install a flywheel locking tool to prevent the flywheel from rotating. 2  Place the pressure plate against the clutch disk and flywheel, making sure the mounting holes are properly aligned. 3  Initially install the fasteners by hand turning them at least four complete revolutions in a crisscross pattern. Even with an alignment tool installed, the free play in the pilot bearing and the weight of the clutch disk is enough to allow a slight amount of misalignment. 2  Once the fasteners begin to apply tension to the pressure plate, slide the clutch alignment tool in and out to check for excessive drag.