(self)
return (self._n - 2)*S.Pi/self._n
Measure of the interior angles.

        Returns
        =======

        interior_angle : number

        See Also
        ========

        sympy.geometry.line.LinearEntity.angle_between

        Examples
        ========

        >>> from sympy.geometry import RegularPolygon, Point
        >>> rp = RegularPolygon(Point(0, 0), 4, 8)
        >>> rp.interior_angle
        3*pi/4
Measure of the interior angles.
Measure of the interior angles .
def interior_angle(self):
        """Measure of the interior angles.

        Returns
        =======

        interior_angle : number

        See Also
        ========

        sympy.geometry.line.LinearEntity.angle_between

        Examples
        ========

        >>> from sympy.geometry import RegularPolygon, Point
        >>> rp = RegularPolygon(Point(0, 0), 4, 8)
        >>> rp.interior_angle
        3*pi/4

        """
        return (self._n - 2)*S.Pi/self._n
def interior_angle ( self ) : return ( self . _n - 2 ) * S . Pi / self . _n