Philippi Lansbergii Cyclometriae novae libri dvo .. (1616)
Lansberge, Philippe van, 1561-1632 · Middelbvrgi : Ex officina Richardi Schilders · leaf 66
38 CYCLOMETRIE ter ad perimetri quadrantem. Diameter enim eft 20000000 particul, & perimetri quadrans earundem particul, 15707963275 quadratum diametri, 400000000000000. Vt autem 20000000 ad 15707963253 ita 400000000000000, ad 314159265000000, pror(us vt fupra. 4. Redlangulum fab radio circuli, €… … E G contentum ra- dio AD id eft DE ex fabrica, & bafis D B C perimetri dimidio D G , zquale effe fc&ori A C BD. Nam per1;5? Quinti Euclidis partes eandem ra- tionem habent quam earum multiplicia, Quare vt circulus fc ha- bet ad rectangulum contentum radio & perimetri dimidio, ita eti-- am fe&or fe…
Circle · Geometry -- Early works to 1800
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
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