PROBLEMATVM. tx^ 



liim in duas partes fimilcs neccffario fecet , ideoque 

 triangulum fit ifofceles. Pofito autem ftatim a 

 principio b — a^ fit X-=i\c^^{'\.aa-cc)tt AP;:i:AQ^ 

 znAR — ASnl^, tum Yero 



vnde ob punda P, Q^, R, S coincidentia in bafis 

 pundo medio, quod fit 0> interualk iutei haec pua- 

 dla erunt : 



OF— OErc-y^^—^j; OG— OEn: yj— ^^Errr") I 



OH.— OE— vt+aa— cc) 



n 1? n r" {" — c) ( '" — (^) r\ u rt c " a — cc 



VJr— UU — TVTTaft— cc;; Utl — Ul* — T7(TTa — cc) 5 



O H — O G — VT+ o a — cc) • 



28. Hic duos cafus contcmplari conuenit prout 

 fuerJt vel a^c -vel a<^Cy nam fi a—c^ feu triaa- 

 gulum aequilaterum, omnia quatuor punda in vnum 

 coalefcunt ; 



I. Si a^c pundla erunt difpofita vtt fig. g.Tat). IL 

 refcrt , vbi eft HFc^iEH fcu EF-|EH et *^S- »► 

 EG<JiEH hocque cafu pundum bafis medium 

 O in reda HE produdla vltra E caditi vt fit OE 



_ ce 



— jy(«ao— cc|.* 



IL Si a<^Cy puncfta enint difpofita vti fig. 9. Fig. 9. 

 refert, vbi eft iterum HF^IEH feu EF — |EH 

 at EG^-iEH Hoc autem cafa pundum bafis m.e- 

 diuia O ia reda EH produ<!:tai vltra Hcaditj vt fit 



HO 



