How to teach paper-folding and cutting: a practical manual-training aid (1892)
[Litchfield, Norma MacLeod] [from old catalog] · Lebanon, Ohio, March brothers · leaf 60
Fold the squares as for the hexagon (see figure No. 77),and then double the paper over until it presents theappearance shown in figure No. 78. Form the isos-celes triangle as in the previous polygon by drawing POLYGONS. 57 through B-C. Opening the folded paper, a pentagonappears as represented in… … ^o.7f. sections are folded and then a portion equal to half ofone of these parts. Figure No. 80 shows the direc-tion of the folds, and figure No. 81 the appearance ofthe paper when folded. Cut through the line B-C.
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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-109-32.webp)
