The term 57 Degrees Angle can be broken down into four crossword solutions: Radian (6 letters), Radians (7 letters), ACUTE (5 letters), and ELL (3 letters), OBTUSE (6 letters). Radian is a unit of measurement for angles, equal to the angle subtended at the center of a circle by an arc that is equal in length to the radius of the circle. Radians are the plural form of radian. ACUTE angles are angles that measure less than 90 degrees. An ELL is an old unit of measurement for angles, equal to 1/60th of a degree. OBTUSE angles are angles that measure more than 90 degrees but less than 180 degrees. Therefore, 57 Degrees Angle is an ACUTE angle.