Gvidivbaldi è marchionibvs Montis Perspectivae libri sex (1600)
Monte, Guido Ubaldo, marchese del, 1545-1607 · Pisavri : Apud Hieronymum Concordiam · leaf 247
D ad X,- ducaturquc CD pta-faUclaipfi AB-. primum quidcm ACBD parallclogrammum oftcndet,tanquam in fabicdo plano. Dcinde eriganmr AE BF a:qualcs,5c pcr^pcndicularcsipfi ABj defcribaturqucarcus EGF; fimilitcrquedacanturCH DI ipfi AB, ac pcr confequcns ipfi CD perpcndicularcs ,-ducan^•|H^rque EH FI.… … •I I credum rcprxfentabit ; fiqui.iem AC EH parallcln: apparent; quia midcm pundum concurlus X concurrunt. ob candcmquccaulam EFIDparallclogrammumapparet: Vndocx diftis CH ipfi AE, DI vcro ipfiI5F apparet xqualis. quare cum fint AE BF xqualcs, crunt & DI CHaiquales. quaredcfcribaturfimilitci…
Perspective · Geometry, Projective
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