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

Table of contents

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[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.
[91.] COROLLARIVM II.
[92.] LEMMA PRO ANTECED. PROP.
[93.] THEOREMA XX. PROPOS. XXIII.
[94.] COROLLARIVM.
[95.] THEOREMA XXI. PROPOS. XXIV.
[96.] COROLLARIVM.
[97.] THEOREMA XXII. PROPOS. XXV.
[98.] COROLLARIVM.
[99.] THEOREMA XXIII. PROPOS. XXVI.
[100.] THEOREMA XXIV. PROPOS XXVII.
[101.] COROLLARIVM.
[102.] THEOREMA XXV. PROPOS. XXVIII.
[103.] DEFINITIO.
[104.] SCHOLIV M.
[105.] LEMMA I.
[106.] LEMMA II.
[107.] LEMMA III.
[108.] LEMMA IV.
[109.] COROLLARIVM.
[110.] LEMMA V.
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8969LIBER I. incidentes, ac oppoſitarum tangentium, HK, MN, Vu, Zg, ip-
ſas
, KN, ug, ſi.
n. iungeremus, MK, Zu, probaretur, MH, ad,
HK
, eſſe vt, ZV, ad, Vu, (ſunt.
n. ſimiles figuræ, HMPL, V
ZdY
, necnon, LPK, Ydu, circumſtant autem latera proportio-
nalia
angulos æquales, MHK, ZVu, &
ideò oſtenderemus trian-
gula
, MHK, ZVu, eſſe ſimilia, vnde pateret angulos, HKM,
VuZ
, eſſe æquales, ſed etiam, HKN, Vug, ſunt ęquales, ergo
116. Sex. El. pateret angulos, MKN, Zug, eſſe æquales, ſunt autem etiam æ-
quales
, MNK, Zgu, ergo triangula, MKN, Zug, eſſent æ-
quiangula
, vnde, MN, ad, Zg, eſſet vt, KN, ad, ug, incidunt
autem
, KN, ug, oppoſitis tangentibus, HK, MN, Vu, Zg, ad
eundem
angulum ex eadem parte, ergo ipſarum tangentium, ac fi-
2224. huius. gurarum ſunt incidentes, KN, ug, cum verò, KN, ad, ug, ſit vt,
MK
, ad, Zu, ideſt vt, MH, ad, ZV, vel vt quoduis ſolidorum
latus
homologum ad quoduis latus homologum, ideſt vt, GO, ad,
8f
, ideſt vt, OD, ad, f℟;
OD, autem ad, f℟, ſit vt, Bo, ad, Qf,
ideò
, KN, ad, ug, erit vt, BO, ad, Qf, &
diuidunt ſimiliter ad
eandem
partem ipſas, BO, Qf, in punctis, Ku, quæ incidunt ip-
ſis
, BC, OD, Qf, R℟, ad eundem angulum ex eadem parte, ſunt
.
n. anguli, BOD, Qf℟, æquales, quod & de cæteris incidentibus
probabitur
, ergo figurę, BODC, Qf℟R, quę capiunt omnes di-
33Deſio. 10.
huius
.
ctas incidentes, ſunt ſimiles, &
arum homologę ipſę incidentes, qua-
rum
omnium regulæ ſunt, OD, f℟, &
ſunt ipſę figurę, BD, Q℟,
æquè
ad eandem partem ipſis baſibus inclinatę, cum ſint in planis fi-
44Lem. 1. gurarum, oOS, sfp, ergo dicta ſolida ſunt etiam ſimilia iuxta de-
fin
.
11. huius. quod ſi plana, GOo, 8fs, non eſſent in ambitu ſi-
milium
dictorum ſolidorum, facilè tamen oſtenderemus portiones
ſolidorum
vltra eadem plana exiſtentes eſſe ſimiles, ac ipſarum, &

oppoſitorum
tangentium planorum iam dictorum incidentes repe-
riri
in planis figurarum, BD, Q℟, cum eiſdem integrantes figuras
incidentes
integrorum ſimilium ſolidorum, ac dictorum oppoſito-
rum
tangentium, quod ſpeculanti facilè innoteſcet, hoc autem erat
oſtendendum
.

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