1
DE MOTU
CORPORUM
CORPORUM
Producantur ABad K,& BDad L,ut ſit BKad ABut
HIad GH; & DLad BDut GIad FG; & jungatur KL
occurrens rectæ CEin i.Producatur iLad M,ut ſit LMad iL
ut GHad HI,& agatur tum MQipſi LBparallela rectæque
ADoccurrens in g,tum giſecans AB, BDin f, h.Dico
factum.
HIad GH; & DLad BDut GIad FG; & jungatur KL
occurrens rectæ CEin i.Producatur iLad M,ut ſit LMad iL
ut GHad HI,& agatur tum MQipſi LBparallela rectæque
ADoccurrens in g,tum giſecans AB, BDin f, h.Dico
factum.
Secet enim Mgrectam ABin Q,& ADrectam KLin S,&
agatur APquæ ſit ipſi BDparallela & occurrat iLin P,&
erunt gMad Lh (giad hi, Miad Li, GIad HI, AKad
BK) & APad BLin eadem ratione. Secetur DLin Rut ſit
69[Figure 69]
DLad RLin eadem illa ratione, & ob proportionales gSad
gM, ASad AP,& DSad DL; erit, ex æquo, ut gSad Lhita
ASad BL& DSad RL; & mixtim, BL-RLad Lh-BL
ut AS-DSad gS-AS.Id eſt BRad Bhut ADad Agad
eoque ut BDad gqueEt viciſſim BRad BDut Bhad gQ,ſeu
fhad fg.Sed ex conſtructione linea RLeadem ratione ſecta fuit
in D& Ratque linea FIin G& H:ideoque eſt BRad BD
ut FHad FG.Ergo fheſt ad fgut FHad FG.Cum igitur
ſit etiam giad hiut Miad Li,id eſt, ut GIad HI,patet li
neas FI, fiin g& h, G& Hſimiliter ſectas eſſe. q.E.F.
agatur APquæ ſit ipſi BDparallela & occurrat iLin P,&
erunt gMad Lh (giad hi, Miad Li, GIad HI, AKad
BK) & APad BLin eadem ratione. Secetur DLin Rut ſit
69[Figure 69]DLad RLin eadem illa ratione, & ob proportionales gSad
gM, ASad AP,& DSad DL; erit, ex æquo, ut gSad Lhita
ASad BL& DSad RL; & mixtim, BL-RLad Lh-BL
ut AS-DSad gS-AS.Id eſt BRad Bhut ADad Agad
eoque ut BDad gqueEt viciſſim BRad BDut Bhad gQ,ſeu
fhad fg.Sed ex conſtructione linea RLeadem ratione ſecta fuit
in D& Ratque linea FIin G& H:ideoque eſt BRad BD
ut FHad FG.Ergo fheſt ad fgut FHad FG.Cum igitur
ſit etiam giad hiut Miad Li,id eſt, ut GIad HI,patet li
neas FI, fiin g& h, G& Hſimiliter ſectas eſſe. q.E.F.