The Inner Angle of Polygram is the unequal angle of the isosceles triangle which forms the spikes of the Polygram or the angle inside the tip of any spike of Polygram. And is denoted by ∠Inner. Inner Angle of Polygram is usually measured using the Degree for Angle. Note that the value of Inner Angle of Polygram is always positive. Typically, the value of Inner Angle of Polygram lies in the range from 0 to 180.