The figure made by two lines that meet. 2. The difference in direction of such intersecting lines, or the space within them. 3. A projecting or sharp corner. 4. A secluded area resembling a corner; a nook. 5. A hot-rolled structural steel section having an L-shape, designated by the prefix L followed by the length of each leg and their thickness. Also called angle iron. 6. The space between two lines diverging from a common point, or within two planes diverging from a common line: the figure so formed. 7. The amount of rotation needed to bring one line or plane into coincidence with another, measured in radians or in degrees, minutes, and seconds.