Smaller Obtuse Angle of Trapezoid is the smaller angle on the short base or the angle made by the short base and short leg of the Trapezoid. And is denoted by ∠Smaller Obtuse. Smaller Obtuse Angle of Trapezoid is usually measured using the Degree for Angle. Note that the value of Smaller Obtuse Angle of Trapezoid is always positive. Typically, the value of Smaller Obtuse Angle of Trapezoid lies in the range from 90 to 180.