(geometry) A pair of angles that sum to 180 degrees.

(geometry) plural of complementary angle

(geometry) A pair of angles that sum to a right angle.

(geometry) The three-dimensional analog of an angle, equivalent to the area of that portion of the surface of a unit sphere that it subtends.

(cinematography, photography) Of or pertaining to a short focal length lens that has an angle of view greater than about 70°; of or pertaining to an image produced with such a lens.

(obsolete, idiomatic) To beg out of a prison window with a cap, or box, let down at the end of a long string.

(geometry) An angle of 360 degrees; a full circle.

(geometry) Of a triangle, having an obtuse angle.

(geometry) Of a triangle, having three acute angles.

(geometry) the internal angles made by two (parallel) lines with a third, on opposite sides of it.