CORPORVM RICDORVM. 193 



linca rc(fln, nliac fbrmne locum hii.bere neqiieunt, niU 

 <}uas llatuimus : fcilicct 



\bi litterac F, G, H certas defignant ccnflautes ab 

 indole translationis pcndentes. 



§. 7. Statim autem manifcftum cfl, ifias con- 

 flantcs if.i comparatas cfTe debcre, vt interuallum i z 

 acqu.ile lit intcruallo IPnp, vnde fequitur illa 

 tleterminntio: 



i s' — F>' -{- G' p' -f- H'/)' — p p 



qnam ob rcm uecefTe ell: \t flt F'-h G"-!- H'— s, 

 Quod fi ergo fumamus F — fin, ^ , f.cri debet 

 C' -H H' — cof. ^^ ; hanc ob rem (latuamus 



G — coC c, fin. -v] et H — co(. ^' cof. "vj , ita vt fit 



F — fin. <^ , G cof 4 ^'"' "VI et H — cof. <^ cof. y\. 

 Hoc ergo mcdo trcs iitterae iilae F, G, H ad duos 

 tantum angulos <^ et >] funt rcducluc, 



§. 8. Simili modo fumamus nuiiC pundlum z 

 in eo loco , in qucm pundrum Q ex (w^ initiali 

 fuerit transl.itum ; at vcro puncftuni Z in puncflum Q_ 

 cadit fumcndo /> — o ct r — o. Hoc ergo cafu rer- 

 nae coordin.itae .v, r, ~ ita pcndtbunt a (o!a varia- 

 bili ^, vt fado q zr. o itcrum fiat xinf^y — g et 

 2 — /? ; quamrbiem , cum aequotio etiam dtbeat 

 t^^c pro linea r^cla , coordir.atac tniem foTiiam iia- 

 bebunt: 



Xz=.f-\-Y'q ,yz=:g-V-Q^q, Z-h-\- VJ q 

 Tbi ergo ob iz zr. q ctiam efle oportet 



F'F'-HG'G'4-H'H'-i 



lcnii.XX.Nou.Comm, Bb au 



