♦ 40 I^E TRANSLaTIOXR 



fifiim ei , cuem in fljtu inirinli habuit. ITum igi- 

 ti)r hanc dta.Oilbarioucin heic cxplicandam conflitui, 

 e rc cilc ciixi nonnull^s quoque :il,:is metiitationcs 

 ce trnn>l:.t.one c(rp<irum pratmittcrc ^ [aitini quia 

 iid idam tleinoi f\raLioncm iiiucnicnc:tm v;am inihi 

 praeporareiunt , tum tt.am quoU inkruire poterunt, 

 aci ea vbc-r'us cdnfirmMvJa , qune llluiir. Lukiut lie 

 huc traubluiicnc docuit. 



Lemma i. 



2. Suwth m fnjci/iiie Jf/rociicir trihns lurclh 



A, B, C ouadruiuibus a jc imiia^ii iijJor.libus , // bi-' 



Tab. l]I. j,,^ quMCWUjue alia pivcta JM, N ;n eadiin 'uUr/icie 



et^"'. ^ ^fA^^t^ I ^"^'^ ^^'^^^ f^ » ?''''■'" '^^^^ ^^^^ ptificiis A, B, C 

 eircubus cinu.nrum moxitnoutr,: iitv.ganmr^ erit: 



cof. M N -co^ A IVl co(. A N + col. B ^'\ col.BN -fcolXM cof.CN. 



Dcmionflratio. 



Corcipiantur arcus A M , A N prodii<fli v«cue 

 <3um circiilo maxin.o BC occurrant in P ct Q, 

 Quum igitur fit 



col.AlN-<o(.AI\T.cof.AN4fin.AIVlfin.ANcof.,V^AN, 



Fig j. ongiiJ"« 311 Tcm M A N .fit \d — M A C — N A C, 

 vcJ MAC-+-bAC \tiumqi!e hunc caium fccrfim 

 couficieaibamu^. Sit i^iJtur friv.o 

 M A 'N = M A C - N A L > tri.tque 

 col. M A N rr coC M AC cof. N AC-f fin. A; AC fin. N AC) 



Jioc jgiun- Afllcre pro cof. Al A N luUbiuio , ccnlc- 



queniur 



