Euclidis Elementorum libri XV breviter demonstrati, opera Is. Barrow / [Euclid].

  • Euclid.
Date:
1659
Catalogue details

Licence: Public Domain Mark

Credit: Euclidis Elementorum libri XV breviter demonstrati, opera Is. Barrow / [Euclid]. Source: Wellcome Collection.

    416/428 (page 390)
    Px0»P.. 79. t I pil unt, ! : Circa triang. GEF defcribe circulum.Fac ang.? FEH — B.ConneCte HE ; HG; & demitte per-] Liquet triangula ABC, HEF, &-ABD;HER;! ac ACD. HEK .&quiangula fote. Proinde EK.) KH :BD.DA.&FK.KH:: CD. DA. pquae EF. KH:: BC. DA::cEF. L G3 dquare KH — LG. * ergo HG parall. KL. fun de ang. EGH — GET. gergo arcus EH, FG b ideoque anguli EFH, GEF. zquantur. À Ite Quiangula funt. Q. E. D. | we o£: € 5 wh S^ *w* - ya ^a a6 O't x» (8 H