Function Allocation. Function allocation (also known as task allocation) is a classic human factors method for deciding whether a particular function will be accomplished by a person, technology (hardware or software) or some mix of person and technology.
perpendicular - a straight line at right angles to another line straight line - a line traced by a point traveling in a constant direction; a line of zero curvature; the shortest distance between two points is a straight line 2. perpendicular - a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting
Definition. Parallel lines are two lines that are always the same distance apart and never touch. In order for two lines to be parallel, they must be drawn in the same plane, a perfectly flat surface like a wall or sheet of paper. Parallel lines are useful in understanding the relationships between paths of objects and sides of various shapes.