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

Table of contents

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[211.] D. SECTIO IV.
[212.] E. SECTIO V.
[213.] F. SECTIO VI.
[214.] G. SECTIO VII.
[215.] H. SECTIO VIII. ET VLTIMA.
[216.] COROLLARIVM I.
[217.] COROLLARIVM II.
[218.] THE OREMA XVIII. PROPOS. XVIII.
[219.] THE OREMA XIX. PROPOS. XIX.
[220.] COROLLARIVM I.
[221.] COROLLARIVM II.
[222.] LEMMA.
[223.] THE OREMA XX. PROPOS. XX.
[224.] COROLLARIVM.
[225.] THE OREMA XXI. PROPOS. XXI.
[226.] COROLLARIVM.
[227.] THE OREMA XXII. PROPOS. XXII.
[228.] A. COROLLARII SECTIO I.
[229.] B. SECTIO II.
[230.] C. SECTIO III.
[231.] D. SECTIO IV.
[232.] E. SECTIO V.
[233.] F. SECTIO VI.
[234.] THEOR EMA XXIII. PROPOS. XXIII.
[235.] A. COROLLARII SECTIO I.
[236.] B. SECTIO II.
[237.] C. SECTIO III.
[238.] D. SECTIO IV.
[239.] E. SECTIO V.
[240.] F. SECTIO VI.
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217197GEOMETRIÆ
CAVALERII
LIBER TERTIVS.
In quo de circulo, & Ellipſi, ac ſolidis ab
eiſdem genitis, traditur doctrina.
131[Figure 131]
THEOREMA I. PROPOS. I.
OMnia quadrata portionis circuli, vel El-
lipſis, ad omnia quadrata parallelo-
grammi in eadem baſi, &
altitudine
cum portione conſtituti, regula baſi,
erunt, vt compoſita ex ſexta parte axis,
vel diametri eiuſdem, &
dimidia reli-
quæ portionis, ad axim, vel diame-
trum reliquæ portionis:
Eadem verò
ad omnia quadrata trianguli in ijſdem
exiſtentis erunt, vt compoſita ex dimidia totius, &
reliquæ
portionis axi, vel diametro, ad axim, vel diametrum reliquæ
portionis.
Sit circulus, vel ellipſis, EDRP, cuius axis, vel diameter, ER,
ad quem ordinatim applicetur, DP, abſcindens vtcumque portio-
nem, DEP, quæ ſumatur quoq;
pro regula, & centrum ſit, A, ac
parallelogrammum, FP, in eadem baſi, DP, cum portione, &
ea-
dem altitudine;
ſint autem primò, DF, PH, latera parallelogram-
mi, FP, parallela ipſi, ER.
Dico ergo omnia quadrata portionis,
DEP, ad omnia quadrata parallelogrammi, FP, eſſe, vt compo-
ſita ex ſexta parte, EB, &
dimidia, BR, adipſam, BR.

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