Cavalieri, Buonaventura, Geometria indivisibilibvs continvorvm : noua quadam ratione promota

Table of contents

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[321.] E. SECTIO V.
[322.] F. SECTIO VI.
[323.] THEOREMA XI. PROPOS. XII.
[324.] THEOREMA XII. PROPOS. XIII.
[325.] COROLLARIVM.
[326.] THEOREMA XIII. PROPOS. XIV.
[327.] COROLLARIVM.
[328.] THEOREMA XIV. PROPOS. XV.
[329.] ALITER.
[330.] THEOREMA XV. PROPOS. XVI.
[331.] THEOREMA XVI. PROPOS. XVII.
[332.] COROLLARIVM I.
[333.] COROLLARIVM II.
[334.] THEOREMA XVII. PROPOS. XVIII.
[335.] COROLLARIVM.
[336.] THEOREMA XVIII. PROPOS. XIX.
[337.] COROLLARIVM.
[338.] THEOREMA XIX. PROPOS. XX.
[339.] COROLLARIVM.
[340.] THEOREMA XX. PROPOS. XXI.
[341.] COROLLARIVM.
[342.] THEOREMA XXI. PROPOS. XXII.
[343.] THEOREMA XXII. PROPOS. XXIII.
[344.] THEOREMA XXIII. PROPOS. XXIV.
[345.] THEOREMA XXIV. PROPOS. XXV.
[346.] THEOREMA XXV. PROPOS. XXVI.
[347.] THEOREMA XXVI. PROPOS. XXVII.
[348.] THEOREMA XXVII. PROPOS. XXVIII.
[349.] THEOREMA XXVIII. PROPOS. XXIX.
[350.] THEOREMA XXIX. PROPOS. XXX.
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325305LIBER IV.
THEOREMA XV. PROPOS. XVI.
INeadem ſupradicti Theorematis figura oſtendemus tri-
lineum, VNAI, ad trilineum, VNABX, eſſe vt pa-
rallelepipedum ter ſub, EI, &
quadrato, IA, cum cubo,
IA, ad parallelepipedum ter ſub, CX, &
quadrato, XB,
cum cubo, XB.
Similiter trilineum, VEI, ad trilineum,
VECX, eſſe vt parallelepipedum ter ſub, AI, &
quadra-
to, IE, cum cubo, IE, ad parallelepipedum terſub, BX, &

quadrato, XC, cum cubo, XC.
Trilineum enim, VNAI, ad parabolam, ANE, eſt vt paral-
116.huius. lelepipedum ter ſub, EI, &
quadrato, IA, cum cubo, IA, ad cu-
bum, AE, item parabola, ANE, ad parabolam, BNC, eſt vt
cubus, AE, ad cubum, BC, &
tandem parabola, BNC, ad trili-
222.huius. neum, VABX, eſt vt cubus, CB, ad parallelepipedum ter ſub, C
X, &
quadrato, XB, cum cubo, BX, ergo, ex æquali, trilineum,
VNAI, ad trilineum, VNBX, erit vt parallelepipedum ter ſub,
336.huius. EI, &
quadrato, IA, cum cubo, IA, ad parallelepipedum ter
ſub, CX, &
quadrato, XB, cum cubo, XB. Eodem modo o-
ſtendemus trilineum, VIE, ad trilineum, VXC, eſſe vt paralle-
lepipedum ter ſub, AI, &
quadrato, IE, cum cubo, IE, ad pa-
rallelepipedum ter ſub, BX, &
quadrato, XC, cum cubo, XC,
quod, &
c.
THEOREMA XVI. PROPOS. XVII.
SI duæ intra curuam parabolicam ducantur rectæ lineæ
axem ſecantes, fuerint autem conſtitua@um ab eiſdem
parabolarum diametri, vel axis, &
diameter æquales, & ipſe
parabolæ erunt æquales.
Sit curua parabolica, BAC, intra quam ducantur vtcunque duę,
DF, MC, axem ſecantes, ideſt non parallelæ axi, ſint autem, A
R, HO, diametri, vel axis, &
diameter inter ſe æquales. Dico
parabolam, DAF, eſſe æqualem parabolæ, MHFC;

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