aas sounrio 



RE*— S^(CA'-CR*), ex natiira elUpfis 



• /-1 Ti ca.re 



erit v_D — v,ca=-cr*> 



lam eft CA. RE= ee fin. (pV J^^^l 



y(CA'-CR^)=zy('^4fl,rcor.(I)') feu 



y(CA'-CR')=^Vjg,^(f.n.d-fm.(0-(|))cor.Cl)) 



Cum autcm fit — — Cj) , -i- (J) crit 



fin. — fin.. O-Cpjcor.Cj) t-cor(d-(|) lin (p- cx quo habcbitur 



y(CA'-CR^j = ^y^fi^£^'^ 



Ergo prodibit aker femiaxis. 



CB — e fin. (p V «f^j]^ ^eV '-j-i ^" $)• 

 Idem hic c.ilculus locum h:ibebit , li figura ad altcram 

 femidi.imetrum dat.im CF— / accommodctur , tum au- 

 tem quantit.ites e et f atquc anguli <P ct — (J) inter fe 

 permutari debent ; vnde deuuo orictur. 



CA=r/y — ^^ ctCBzr/y — ^^, 



fi ergo axes coniugatos quaefitos ponamus 

 alterum CA — tf , alterum CB — lf crit 



«— ^y f;r{J^:>) —J *^ 7'-'^ 



, - ,/ /'"• iil^^ fV /"'•9/''- ' »_-^^ 



*' — *^ ' cif.{»-^) — / "^ <■■">* 



Hinc crit primo al> — ef{\n. Q , qua aequationc continc- 



tur aequ.ilitas p.ir.illclogrammorum circa diamctros coniu- 



g.uas defcriptorum : 



D-inde hinc etiam dcnuo angulum (|) dctcrminare pot' 



erimus ; crit enim 



tefm. tj^l- 5_ // Jin. ao / . (»— t ) 



fin.(9 — ^) — /('.■. J; "" 



fcu ftrfin. 2(p-/fin. z{^-(p}—fCia. ikoCz^p-ffcoL^^Cm =(|) 



\ndc 



