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# Title: [Renati Des Cartes Principiorum Philosophiae Pars I, & II, More Geometrico demonstratae] Renati Des Cartes Principiorum Philosophiæ Pars I, & II, More Geometrico demonstratæ (shelfmark Leibn. Marg. 31)
# Folio 64, page id 789395444:0086
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64
PRINCIPTA PHLLOSOPHLRRC.
Orpus quod circulariter oretur, continuo a vi externa
impeditur, ne lecundant lineam rectam pergat moreri
per corol. praecedentis): Iua celtante corpus ex se perget le-
cundum lineam rectam moveri
 (Der PrODOL. 15. ). DicOPEaeterea
corpus, quodcireularuer mOre
tur, a caula externa dererminaris
uc lecundum tansentem pergac
moveri. Nlam, sInCsAS, POna-
cur lapis in B a Fundta ex. 8. nOn
secundum tansentem BD deter.
minari, sed secundum aliam li-
neam ab eodem puncto exera, auE
intra circulum Cenceptam, ut BF, quando Funda ex par-
te L. verlus B venire supponitur, aut lecundum BC (quam
intelligo cum linea BEI, quae a centro ducitur per circumteren-
tiam, camque in puncto B Cccat, angulum constituere ae qua-
lem angulo FBLI), si contra lupponatur funda ex Parte C
vertus B reniro. AC, Si lapis in puncto B supponatur à funda,
qua ab L. vertus B circulariter movetur, determinari, ut ver-
lus L pergat moreri: necestario (per aZ. 18.) ubi funda con-
traria determinatione a C vertus B movetur, determinabi-
cur, ut secundum candem lineam B S contraria decermina-
tione pereat moreri, ac proinde vertus R non vero vertus C
cendet, quod est contra hypochelim. Er cum nulla linca, qua
Paiet es per punctum B Potest duci, Prater tansentem cacui Postit.
prop. 18.
19. lib. cum linca BHI angulos ad eandem partem, ut D BII, e A
3. Elemt. B EI, sequales eAiciens: nulla Praeter tangentem datur, quae
candem hypothelin servare porest, sive Funda ab L. vertus B,
live a C versus B moreatur. ac proinde nulla Praeter tangen-
tem Caruenda eAt, secundum quam tendir moreri, g. c. d.
AL I-
D E MONS T R A FTO.