completely. From
geometry, where the
turn or angle of the circumference (the bounding
line) of a circle is measured by a
unit called a degree. There are 360 degrees in the circumference of a circle. A 180-degree
turn puts something in the opposite direction. (ILLUSTRATION taken from
PDC 6)
—HDA Tapes (Oakland Lectures) Approved Glossary (16.4.92)