staff is the collection of parallel lines and spaces on which notes are written.
staff is the collection of parallel lines and spaces on which notes are written.
the collection of parallel lines and spaces on which notes are written?
staff
Na
Na
section::::euclidean parallelism.:two lines in a plane.:construction.









































the three properties above lead to three different methods of construction of parallel lines.









































section::::euclidean parallelism.:two lines in a plane.:distance between two parallel lines.









































because parallel lines in a euclidean plane are equidistant there is a unique distance between the two parallel lines. given the equations of two non-vertical, non-horizontal parallel lines,
parallel (geometry)