Assume that we are approximating a circle defined by x2+y2r2=0 and z=d (in eye space) by a regular hexagon that is inscribed in the circle (i.e., the vertices of the hexagon lie on the circle). If the focal length is e, what is the maximum error in the radius of the approximation in projection-space coordinates. (The maximum error is the distance between the edge of the hexagon and the edge of the circle). Assume that we are approximating a circle defined by x2+y2r2=0 and z=d (in eye space) by a regular hexagon that is inscribed in the circle (i.e., the vertices of the hexagon lie on the circle). If the focal length is e, what is the maximum error in the radius of the approximation in projection-space coordinates. (The maximum error is the distance between the edge of the hexagon and the edge of the circle)