A figure formed by two rays which start from a common point (a plane angle) or by three planes that intersect (a solid angle).
“the angle between lines A and B”
The measure of such a figure. In the case of a plane angle, this is the ratio (or proportional to the ratio) of the arc length to the radius of a section of a circle cut by the two rays, centered at their common point. In the case of a solid angle, this is the ratio of the surface area to the square of the radius of the section of a sphere.
“The angle between lines A and B is π/4 radians, or 45 degrees.”
verb
(often in the passive) To place (something) at an angle.
“The roof is angled at 15 degrees.”
To change direction rapidly.
“The five ball angled off the nine ball but failed to reach the pocket.”