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# Title: De Locis Solidis Secunda Divinatio Geometrica (shelfmark Leibn. Marg. 151)
# Folio 22, page id 898203430:0214
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VINCENTII virIANI BL LOCI SeLS
CIT AB data, quae bitariam secetur in C, quo tacto vertice, cum so
a B delcribatur Parabola C FH, de lumpea qualibee parte vel inceeran.
tC, VE BF, mitior tamen BC, vel B C, datae in directum addici, ordi-
RENCUE PF, GI. Dico concauum huius Parabolae esse Locum propolicum;
hoc est F. F. posse difteremiam imer quadraca parrium integrancium AE,
F B; C HI vero posse disteren-
ciam inter quadrata coadditarum
AC, CB.
Tunsantur BF, BII. Tam PCE
Corollarium ij. Prop. Xexvi: lib.
ii. nostx Divinac. in APOIl. 14-
us BF ex foco aequatur agerc-
Sato Cx FC cum CB, sed est
CB ipsi AC aequaliS, ex CON-
structione, ergo BF aequituE ip (
AF. Padem ratione octenditur
B H aequalis ip(I AC5, e BD
aequalis AB, sed quadratum F F est differentia inter quadrata BF, BF,
erco idem F F est quocue disterentia inter quadrata incegrantium A F,
E B. Similicer quum quadeatum C H sit disserentia inter quadrata BFI,
BC, idem OH eric d differentia inter quadrata conddicarum AC, CB
veluri etiam quadratum BD est disserencia inter quadratum AB, de qua-
dracum (si ita loqui Fas eAt) puncti B: e hoc de lingulis similibus ordi
natis dec. Ouare concauum huius Parabolae est Locus propolitx Ordinatio.
nis. Ouod erat 80. 
e
PROPOSILLO A.
ei
1
Est. et
Ocus Ordinatarum potentium differentiam inter qua
dratum datae es quadratum superaddita est ad con
cauum Erperbolae aequilaterae; cuius vertex sit occur.
sus datae cum addita; axis ipsa addita, centrum ve-
ro sit occursus date cum superaddita; ita et semianis
transuersus sit datae aequasis.
el Ai calas e superaa quatoe e, ce cu cenie a per te
lcem B delcribatui tespeibola aequilatera B L. Dico huius ConCa
num esse Locum propolicum: nempe ordinatam C P. Poste difserentiam ino
cer quadrarum dacae AB, ee quadraum luperaddicae AC.
Ex