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.
Remove the #1 spark plug. Stick a finger in the spark plug hole. Turn the ignition OFF. Bump the starter until you feel compression try to blow your finger out of the hole. Finish turning the engine in the direction of rotation. (clockwise) until the timing mark on the flywheel is on 4*.hen, set the timing correctly. Mark the flywheel w/ chalk (I use white paint) at 4* and 17*. Hook up the timing light to any plug wire. Get the the engine idle to 400 rpms, hold the light over the timing hole.