Before passing from conical caps there are one or two peculiar shapes that give interesting results that are worth while specially considering. Thus, in the case of a cone in which the slant height is equal to the diameter of base, the pattern develops out to an exact semicircle. When the diameter of base is equal to half the slant height, the pattern will be just a quarter of a circle. In Fig. 82, where the diameter of base is one and a half times the slant height, it will be seen that the pattern comes out to three-quarters of a circle. Several other interesting cases can no doubt be discovered by the reader by the careful choice of dimensions for the conical cap.

Special Conical Shapes 96

Fig. 84.