Smaller Acute Angle of Trapezoid is the smaller angle on the long base or the angle made by the long base and long leg of the Trapezoid. And is denoted by ∠Smaller Acute. Smaller Acute Angle of Trapezoid is usually measured using the Degree for Angle. Note that the value of Smaller Acute Angle of Trapezoid is always positive. Typically, the value of Smaller Acute Angle of Trapezoid lies in the range from 0 to 90.