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# Title: De Locis Solidis Secunda Divinatio Geometrica (shelfmark Leibn. Marg. 151)
# Folio 2, page id 898203430:0194
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VINCENTII VIVLANT DE LOCIS SOLIDIS
es) C eed E et) s)  E C es
D LOCIS SOLIDI
EIBF R S FCY ND Y S
PRIOPOSFTTOT
Ocus Ordinatarum potentium rectaneulum sub par-
atibus datae linea, est LOcus Planus, nempe con-
canum peripheriae semicirculi super datam descripti.
OC nihil nocius ex Prop. xiii. Sexti Elementorum.
s
51
PROPOSITTO I.
DAHC
Ocus Ordinatarum potentium rectanculum sub da
ta, (5 parte, vel inteorante, vel superaddita, est
ad concauum Parabola, cuius vertex sit occursus da-
tae eum parte assumpia, rectum vero latus sit ibsa
data.
YPT dat2 linea AB, CuIS PArS A C, Vet MICSaII, Vel SaPCaa
D _ per verticem A circa axem AB sic Parabola AD, cuius rectum.
lacus SIE ipla AB. Dico hanc eNe Locum
propolicum: nimirum ordinatam CD pol.
se rectangulum sub daca AB in partem
Manifectum est id ex vulgata Parabolx
proprictate: Nam quadraium Ordinatae
COxquale est 2 rectanoulo sub recto la
tere AB, in seomentum diametri AC; &
hoc de qualibet ordinara _c. Ouare Con-
cauum huus Parabola est Locus propolix Ordinacionis.
12. prim
SOD. C.