Young, George, jr, Baxter, Hubert Eugene, joint author · New York, Macmillan · leaf 80
rc. In this way we can determine theheights of each of the required points, e, h, etc. When all thepolygons are thus rotated into position, the cup-shaped figure V, § 52] PLANE FIGURES AND SOLIDS 61 shown by the solid lines in Fig. 59 is obtained. This is thelower part of the dodecahedron. The… … Fig. 60 52. Prisms. A right prism may be defined as a solid gen-erated by the motion of a plane polygon which moves withoutrotating, in a direction perpendicular to its own plane. If thisgenerating polygon is a regular polygon, the prism is calledTegular, and the line through the center of the…
Geometry, Descriptive
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![An illustration from Cosmographia in qvatvor libros distribvta summo ordine, miraqve facilitate, ac breuitate ad magnam Ptolemæi mathematicam constructionem, ad vniuersamque astrologiam institutens. Francisco Barocio ... avtore. Cum præfatione eiusdem autoris, in qua perfecta quidem astrologiæ diuisio, & enarratio autorum illustrium, & voluminum ab eis conscriptorum in singulis astrologiæ partibus habetur: Joannis de Sacrobosco verò 84 errores, et alij permulti suorum expositorum, & sectatorum ostenduntur. rationibusq[uam] redarguuntur. Præcesserunt etiam quædam communia mathematica, necnon arithmetica, & geometrica principia, nonnullæq[uam] propositiones, de quibus in toto opere sæpe fit mentio: ac demum locupletissimus index eorum, quæ ipsa Cosmographia continentur .. (1585)](https://img.insideoutlibrary.com/img/200/ia-cosmographiainqv00baro-127-49.webp)
