Apex Angle of Crossed Rectangle is the unequal angle of any of the isosceles triangles in the Crossed Rectangle. And is denoted by ∠Apex. Apex Angle of Crossed Rectangle is usually measured using the Degree for Angle. Note that the value of Apex Angle of Crossed Rectangle is always positive. Typically, the value of Apex Angle of Crossed Rectangle lies in the range from 0 to 180.