noun
minor angle
Geometry term for an angle less than 180 degrees, contrasted with 優角 (major angle, greater than 180°). Used in technical contexts.
See also: 優角
劣角は180度より小さい角を指す。
A minor angle refers to an angle smaller than 180 degrees.
三角形の内角はすべて劣角である。
All interior angles of a triangle are minor angles.