A frieze pattern is a pattern of symmetry in a line. They not only occur in dance, but are often found in architecture.
Line dancing relies on frieze patterns.
Image Source: https://phoenixldc.files.wordpress.com/2011/06/steve-walking-through-beginner-winner-line-dance-by-sue-marshall.jpg
Image Source: https://phoenixldc.files.wordpress.com/2011/06/steve-walking-through-beginner-winner-line-dance-by-sue-marshall.jpg
Here are different frieze patterns used in dance by the way dancers move their feet.
Image Source: http://www.willamette.edu/~gorr/classes/cs145/labs/lab3/friezeFeet.jpg
Image Source: http://www.willamette.edu/~gorr/classes/cs145/labs/lab3/friezeFeet.jpg