^5+ DE TRANSLATIOME 



His igitur valoribus fubftituti?, confequemur : 



cor.A^-Vf(3-i-Y-«'^y+°^-P^+'^''(«+(^-v)(--«-p-Y) 



cof-B«=V((3+-Y-*Xy+a-p)-V(a+(3-YX2-a-f3-y) 

 cof. Bf=:V(a+p-Y)(a+Y-(3)-f y(p+Y-a;(2-a-(3- y) 



cof.aziV(a+p- YXa+Y-P)-'^''^^ ^r-«)>-'^-P-Y) 

 cof.Cfl=V(p+Y-*X|'34-a-Y)+-'>^(a+Y-P)(=^-a-p-Y) 

 cof.Af-V((3hY-a)(p+a-Y)-V(a+Y-PX^-a-P-Y)- 

 Vbi quidem obfcruare conuenit , hos \alores figurae 

 noftrae effe accommodatos , caetcrumque binos inter 

 Te e(fe pcrmutabiles , ita vt fi pro cof A b adhi- 

 beatur 



V((3+y-«)(Y+«-P)-"^(«-^|3--y)( 2-a-|3- y) , 

 tum ftatuendum effe 



cof.Bfl=:V(p+Y-0(Y+'*' P;+V(a-4-(3-Y)[2-«-(3 -y) -, 

 vnde coUigitur produda 



cof. A b. cof. B a ; cof B r cof C (5> 5 cof C o. cof A c 

 femper rationaliter per a, (3, y exprimi. Fiet autem 



cof A Z». cof B tf =: 4 a (3 — 2 ( a -i (3 - Y ) ? 

 quac valoribus dcbitis fiiblHtuiis, in hanc abit 

 cof A^.col.B^-col.Aa coiiBZ^-cofCi', fimili modocolli- 



gctur cffc, 

 cof.Bf cofCfccorB^.cofCf-cofA^ ct - 

 cof.C<7cof Afrcof Cf.col. Aa-col l^b , 



quas aequntiones infra indcpendentcr a confidcrationc 

 pundi Z, demonflrabimus. 



L e m m a II. 



Tab. III. 13- Si comierfme fihacvae circa centrum fimm 



Tig. 9. fixuvi- puncta A, B, C quadrantlbus imcr Jc dijlaniia, 



per- 



