Answer: The measure of a complete angle is given by exact 360° (360 degrees).
If after one whole rotation, the final ray coincides with the angle so formed with the incident or initial ray, then the angle that has been formed is known by the name of a complete angle. In other words, if a 360° angle is drawn after drawing a straight line, then the line will ultimately reach its beginning point and both the lines formed as a result will coincide.