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

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222GEOMETRIÆ

11C

CVm earum vnius contactus fuetit in linea, tunc linea
contactus vocabitur baſis eiuſdem figuræ, reſpectu
cuius poterunt dici vertices puncta contactuum alterius
tangentis: vel ſi iſtius contactus pariter ſit in linea, ambæ
lineæ contactus, oppoſitæ baſes, ſumptæ reſpectu
cuiuſcumq; lineæ, cuiſint æquidiſtantes.

A. II.

22A

CVm plana inuicem parallela tetigerint aliquod ſoli-
dum, vnumquodq; punctum contactus illius vertex
dicatur; & oppoſiti vertices puncta contactuum vtriuſque
dictorum tangentium planorum ſimul comparata: quilibet
autem vertices ſemper intelligantur aſſumpti reſpectu cu-
inſcumq. plani dictis tangentibus æquidiſtantis, quod in-
fra regula pariter appellatur.

33B

IPſa tengentia plana dicantur, oppoſita tangentia plana
eiuſdem ſolidi, reſpectu dicti plani tangentibus æqui-
diſtantis aſſumpta.

44C

CVm dictorum tangentium contactus fuerit in plano,
tunc vtriuſuis tangentium planorum plana conta-
ctus baſes dicantur, cuius reſpectu puncta contactus reli-
quitangentis plani poterunt vertices appellari, & vtriuſq;
tangentium planorum contactus plana dicentur, oppoſitæ
baſes: cum verò vtriuſque contactus fuerit in linea, oppoſi-
tæ baſes lineares ipſæ lineæ contactus vocabuntur.

55D

CVm figuræ planæ oppoſitis tangentibus vtcumq. du-
ctis, & ſolidę oppoſitis planis tangentibus, inciderit
perpendiculariter recta linea in eadem tangentia termina-
ta, dicetur hæc altitudo propoſitæ figuræ planæ, vel ſolidę,
reſpectu dictorum tangentium, vel cuiuſcumque eidem
æquidiſtantis, aſſumpta.

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