Iosephi Torelli veronensis Elementorum prospectivae libri II : opus posthumum (1788)
Torelli, Giuseppe, 1721-1781, Bertolini, Giovanni Baptista · Veronae : Ex officina Moroniana · leaf 17
eliqua fiant, ut fupra, (demonftrabitur item eodem modo, quo fupra, datum eife pun- ftum F in fubjecto piano, datamque fimul anguli A altitudinem AF. Quoniam igitur in tribus hifce figuris puncta B, C, H,F data funt, dataeque item perpendiculares DH, & AF; & punfta quidem B, C, H , F… … F K F X F —K Sit denique pyramidis ABCD angulus B ia fubjeclo plano.Ducatur autem a vertice D recta DE bafi ABC perpendicularis;quae quidem cadet aut in angulo B, aut intra bafim ABC , autextra, in eodem, in quo ipia eft, plano. Cadat primo in B. Sit,autem BK communis planorum fe&io tum…
Perspective · Geometry
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