Hinge Hinge A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation: all other translations or rotations being prevented, and thus a hinge has one degree of freedom. Hinges may be made of flexible material or of moving components. In biology, many joints function as hinges like the elbow joint. There are many types of door hinges. The main types include: Other types include: Since at least medieval times there have been
Pivot turn basically maintained during the turning. The turn starts with the right foot raised from the floor. While continuously revolving, on each strong beat (downbeat) the right foot is stepped flat and on each weak beat (upbeat) the left foot is stepped on the ball (by the right heel). Various types of pivot turns are performed in ballroom dance, including slip pivot, reverse pivot, chains of pivot turns, half pivot (as in fourth step of a natural spin turn), man's first step of an outside spin, and man's third step (toe pivot) of a double reverse spin. Pivot turn In dance,