... the points A or C, and the values of the distance at the points A, C are greater than the values of the distance at the points E, H, I, we get the desiredstrict inequality and this part of the ... negative at the left-handside of α∗ and positive at the right-hand side of α∗.There are three different cases regarding the position of the point N (the intersection of the linethat passes ... of the distance d(q, tp) is the maximum value of d(q, tp) computed at the points I and H. By usingagain the symmetry of the Fig. 1, the values of d(q, tp) at the points Iand...