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

Table of contents

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[61.] COROLLARIVM.
[62.] THEOREMA IV. PROPOS. VII.
[63.] THEOREMA V. PROPOS. VIII.
[64.] COROLLARIV M.
[65.] THEOREMA VI. PROPOS. IX.
[66.] COROLLARIVM.
[67.] THEOREMA VII. PROPOS. X.
[68.] THEOREMA VIII. PROPOS. XI.
[69.] COROLLARIV M.
[70.] LEMMA PRO ANTECED. PROP.
[71.] THEOREMA IX. PROPOS. XII.
[72.] COROLLARIV M.
[73.] THEOREMA X. PROPOS. XIII.
[74.] THEOREMA XI. PROPOS. XIV.
[75.] THEOREMA XII. PROPOS. XV.
[76.] SCHOLIVM.
[77.] THEOREMA XIII. PROPOS. XVI.
[78.] COROLLARIVM.
[79.] THEOREMA XIV. PROPOS. XVII.
[80.] COROLLARIVM.
[81.] THEOREMA XV. PROPOS. XVIII.
[82.] COROLLARIVM.
[83.] THEOREMA XVI. PROPOS. XIX.
[84.] COROLLARIVMI.
[85.] COROLLARIVM II.
[86.] THEOREMA XVII. PROPOS. XX.
[87.] THE OREMA XVIII. PROPOS. XXI.
[88.] COROLLARIVM.
[89.] THEOREMA XIX. PROPOS. XXII.
[90.] COROLLARIVM I.
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3717LIBER I. tium, ACBD, AB, CD, & producantur donec ſibi occurrant, oc-
current autem, quia hæc planis ſe inuicem ſecantibus ſunt parallela,
&
ſit ab illis comprehenſum ſolidum, ZF, erit igitur, ZF, paralle-
ſepipedum, cum eius oppoſita plana ſint inuicem parallela, quæ tan-
gunt ſolidum, ACBD, vt in punctis, A, C, B, D, E, X, &
ideò
erit ſolido, ACBD, circumſcriptum, habens plana oppoſita pro-
11Def. 15. poſitis planis ſe ſecantibus parallela;
quod efficere opus erat.
SCHOLIVM.
_P_Oteſt autem contingere in antecedentis Propoſ. figura ipſam eſſepa-
railelogrammum, &
line as rectas ſe ſecantes, qutbus parallelo-
grammi circumſcriptibilis latera debent eſſe parallela, eſſe ipſa paralle-
logrammi latera, in quo caſu idem eſſet parallelogrammum circumſcri-
ptum, &
cui circumſcriberetur: V eluti hic etiam ſi ſolidum, ACBD,
eſſet parallelepipedum, cuius oppoſitis planis, plana circum ſcrip tibilis
deberent eſſe pacallela, tunc enim idem eſſet parallelepipedum circum-
ſcriptum, &
cui cir cumſcriberetur: Contactus autem in antecedenti po-
teſt etiam eſſe in linea, &
in bac tum in linea, tum in planis, licet con-
tactus, qui fit in punctis tantum expoſitus fuerit.
THEOREMA I. PROPOS. IV.
DAta quacumq; figura plana, vel ſolida, & in plana da-
ta recta linea, in ſolida verò dato plano;
qualibet li-
nea, vel planum, quod indefinitè productum non tangat fi-
guram dictam planam, vel ſolidam, in vertice ſumpto reſpe-
ctu dictæ lineæ, vel plani, vel totum extra, vel aliquid eius
intra figuram cadit, nempè figuram ſecat, ſi linea lineæ, vel
planum plano æquidiſtet.
Sit data figura plana, CARB,
12[Figure 12]&
in ea recta, AB, ſit vertex vnus
reſpectuipſius, AB, punctus, C,
&
ſit recta, HM, parallela ipſi,
AB, quæ etiam indefinitè produ-
cta non tangat figuram, ARBC,
in, C, vertice.
Dico, HM, vel
totam extra figuram cadere, vel
eandem ſecare.
Neutrum efficiat
ſi poſſibile eſt, igitur, HM, tan-
get figuram, CARB, &
non in,
C, igitur in alio puncto, vt in, E,
igitur, E, erit vertex figuræ, CA
RB, reſpectu ipſius, AB, eſt e-
22A. Def. @
huius.
tiam, C, vertēx eiuſdem reſpectu eiuſdem, AB, ergo ſi per,

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