ARCVVM CVRVARVM IRRECTIFICJBIL. 79 



Coroll. 2. 



42. Si igitur ponatur : 



corda arcus fimplicis — z ; corda complementi rz Z. 

 corda arcus n cupli 3£ « ; corda complementi — V 

 vt fit Z = V fj=& et V = V ^=»3 j erit 

 corda arcus («-t-i) cupli — f—^J^ 

 corda complementi zz_ 73^^. 



CorolL 5. 



43. Inuentio ergo cordarum arcuum quornmuis 

 multiplorum vna cum cordis compkmenti ita (e 

 habebit 



Corda arcus corda complementi 



fimpli z=. a - - - (impli rz A 

 dupli zz b — d^Tx ' dupli = ~~^ == B 

 triph =^^b " tripli = ±£=iS = C 

 quadrupli ztdzz ££^ ; quadiupli ~ ££fg& = D 

 qumtuph = e = — a -^. ^qumtuph = r _^ T5 3= h 



CorolL 4. 



44. Simili modo fi corda arcus m cupli fit r r, cor- 

 da complementi zr R j et corda arcus n cupli = s 

 eiusque corda compkmenti =S.>. vt fit R — Vf^-^ 

 et S = V l 0f s , crit corda arcus (m+n) cupli z^Jrli 



T> C . j* - 



et corda complementi = ,--+-77 ai* Q_iin. etuim fumen- 

 do pro n numerum negatiujin , quia tum corch s abit 



in 



