... captures the varia There are generally speaking two types of issues involved: the shape of the figure, and the assignment of the letters I try to discuss first the shape of the figure, starting from the ... reference is The by the AB, B ” (the morphology of the word the determines, in the original Greek, the identity of the elided expressions, given of course the expectations ... directly from the shape of the sphere It is typical that the center of the sphere is always an important point in the figures, and that the defining property of the equidistance of points on the surface...