A text book of geometrical drawing, for the use of mechanics and schools, in which the definitions and rules of geometry are familiarly explained (1849)
Fig. 4. … PLATE XV. 39 would be hexagonal^ Sfc. The sides of all regular prisms areequal rectangular parallelograms. I Fig. 5. Is a square pyramid^ bounded by a square at itsbase, and four regular triangles, as shewn at fig. 6. Pyramids, like prisms, derive their names from the shape of theirbases; thus we…
