FIGURES OF TRIANGLES AND SQUARES

This figure is made of 9 cameras, all equivalent in containing capacity, as shown by a.b.c.d.e.f.g.h.i., and it is included in this art to provide a doctrine for acquiring an art and a method for equating cameras of diverse figures under one and the same figure. For instance, a.b.e. in this figure are equivalent, and consist of a diversity of situations and angles, because a. is made of acute angles, b. of right angles and e. of 2 acute angles and 1 obtuse angle.

By the mixture and situation of various cameras, geometers can know the composition of the said angles, and physiognomists can understand human forms, and astronomers can know the figures of stars and the situation of the influences they transmit to things below, and natural scientists can know the situations that the simple elements have in compounds. Further, this figure is good for knowing other figures, for instance: a. in this figure is a fifth part of b.c.g.h.