line dance is a choreographed dance with a repeated sequence of steps in which a group of people dance in one or more lines or rows without regard for the gender of the individuals, all facing the same direction, and executing the steps at the same time. Line dancers are not in physical contact with each other. Older "line dances" have lines in which the dancers face each other, or the "line" is a circle, or all dancers in the "line" follow a leader around the dance floor; while holding the hand of the dancers beside them.
Square dance is a folk dance with four couples (eight dancers) arranged in a square, with one couple on each side, beginning with Couple 1 facing away from the music and going counter-clockwise until getting to Couple 4. Couples 1 and 3 are known as the head couples, while Couples 2 and 4 are the side couples. Each dance begins and ends each sequence with "sets-in-order" in the square formation. The various square dance movements are based on the steps and figures used in traditional folk dances and social dances of the various people who migrated to the USA. Some of these traditional dances include Morris dance, English Country Dance, Caledonians and the quadrille. Square dancing is enjoyed by people around the world, and people around the world are involved in the continuing development of this form of dance.
Circle dance is the most common name for a style of traditional dance usually done in a circle without partners to musical accompaniment. Dancing in a circle is an ancient tradition common to many cultures for marking special occasions, strengthening community and encouraging togetherness. The circle is probably the oldest known dance formation. http://www.youtube.com/watch?v=yvwgIAVvLpY
