what does acute angle mean in geometry
Updated August 07, 2017. In geometry and mathematics, acute angles are angles whose measurements fall between 0 and 90 degrees or has a radian of fewer than 90 degrees. When the term is given to a triangle as in an acute triangle, it means that all angles in the triangle are less than 90 degrees. It is important to note that the angle must be less than 90Â° to be defined as an acute angle.