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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica (shelfmarks Leibn. Marg. 100:1/2, Stück 1; Leibn. Marg. 100:1/2)
# Folio 857, page id 851387705:0877
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Prd. Z XII. DeCalculo Centri Ceravitatis.
Cyoloides vero Secundarias quod atinet; Protractam scilicet de Contractam;
(quarum illa quidem batin habet Majorem, FLac Minorem, quam est Peripheria FiS. 176
Circuli Generantis:) Disferunt quidem illae, a Primaria, in hoc potistimum:
quoa eca bB (Ceris Semlesctoius, d Semicirculi Generantis circa Cyctoidis
arem conltituti, let secla) nt respectiris Arcubus BI (in protracta,) sey BF
(in contracta) non quidem Aquales, (uc, in primaria, b B rectae Arcubus BA,
sed Proporrionales; (Majores quidem in Procracta, Minores in Contracta de ip
ca urrobique ratione, quam haber Cycloidis illius rel Semiereloidis Batis, ad Peri
pheriam vel Semiperipheriam Circuli generancis;) Aquales autem respectiris
arcubus istius Circuli, cujus Peripheria rel Semiperipheriâ sic hujus Cycloidis vel
Semiereloidis Basi xgualiS. Puta, recta BB (H3, 276.) sive quae Procractam 76Y
sire qua Contractam r6F, spectat; aequalis recta b B, hoc est areui B A, circute
ABa Genitoris primarix rb A; cujus utique Semiperipheria ABa, XquacuF SC
mieyeloidis lux BasI Xa (adeoque  ip(IS r17 2cy) seu promorioni Centri c C
Sunc enim rectae bB, 6B, f8. 276. (Scu BB, Ba tig. 266.) mentura distancia centr.
circuli Genitoris ab axe A a, dum respestira puncta b (in Cycloide primariaz.) lei
e (in secundariis) motu circuli generantis designantur: (ut ex construc
Patet.) Adeoque, dummodo aequales sint Z a, F1, r1 seu c C in omnibus cadem:
aquales item erune bB, CB, upore aequalium exdem parres vel proportionales.
Oux aurem Cycloides secundarias (76I procractam, vel ContraCtAM DBF,) in
dalo quoris puncto s, concineuncscclar Eu, lic habentur. Semieicculo connori
24944
187. 188.